diff --git a/3DGeoVolumes/collections/NewYork/3dtiles/tileset.json b/3DGeoVolumes/collections/NewYork/3dtiles/tileset.json
index 4f03d851cfb312099ba71b08d714b159729bf9bc..de68a1d7d283d017c7ce6f531f138745cd0ea422 100644
--- a/3DGeoVolumes/collections/NewYork/3dtiles/tileset.json
+++ b/3DGeoVolumes/collections/NewYork/3dtiles/tileset.json
@@ -1 +1 @@
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\ No newline at end of file
diff --git a/3DGeoVolumes/collections/NewYork/NewYork.json b/3DGeoVolumes/collections/NewYork/NewYork.json
index b952368a245032196efbe741ae9bfc22a443147b..4dd0f8d81eaf899fc0c7c3080231c3a475724387 100644
--- a/3DGeoVolumes/collections/NewYork/NewYork.json
+++ b/3DGeoVolumes/collections/NewYork/NewYork.json
@@ -49,7 +49,7 @@
           {
             "title": "NewYork - 3D Buildings Manhattan: i3s",
             "rel": "items",
-            "href": "host_url/collections/NewYork/i3s",
+            "href": "https://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/Buildings_NewYork_17/SceneServer/layers/0/",
             "type": "application/json+i3s"
           }
         ],
diff --git a/3DGeoVolumes/collections/collections.json b/3DGeoVolumes/collections/collections.json
index 4de0a731398d816436d76408156a01354f299a20..49f0cc2e90513bda594ba85105b21e55569ef0c8 100644
--- a/3DGeoVolumes/collections/collections.json
+++ b/3DGeoVolumes/collections/collections.json
@@ -49,7 +49,7 @@
           {
             "title": "NewYork - 3D Buildings Manhattan: i3s",
             "rel": "items",
-            "href": "host_url/collections/NewYork/i3s",
+            "href": "https://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/Buildings_NewYork_17/SceneServer/layers/0/",
             "type": "application/json+i3s"
           }
         ],
@@ -66,7 +66,7 @@
           {
             "title": "NewYork - 3D Buildings Manhattan: i3s",
             "rel": "original",
-            "href": "host_url/collections/NewYork/i3s",
+            "href": "https://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/Buildings_NewYork_17/SceneServer/layers/0/",
             "type": "application/json+i3s"
           }
         ]
diff --git a/server.js b/server.js
index 1cbd6f614e61b2e0eb389fddc44f540dbb83a1f7..1a2e2e47c7a916f1d0b86a54da2a7aedd69ae6d4 100644
--- a/server.js
+++ b/server.js
@@ -168,14 +168,26 @@
     })
 
     app.get('/i3s', function (req, res) {
-        if ("i3s_resource_url" in req.params) {
-            res.render('geovolumes/collections.ejs', 
-                req.params
+        if (req.query.i3s_resource_url) {
+            res.render('arcgisclient.ejs', 
+                req.query
             )
         } else {
-            res.send("Error: no i3s parameter specified")
+            res.send("Error: no i3s query parameter specified")
         }
     })
+    app.get('/3dtiles', function (req, res) {
+        if (req.query.url_3dtiles_json) {
+            res.render('cesiumclient.ejs', 
+                req.query
+            )
+        } else {
+            res.send("Error: no url_3dtiles_json parameter specified")
+        }
+    })
+    app.use(express.static("static"));
+    app.use(express.static("3DGeoVolumes"));
+
     const httpServer = http.createServer(app);
     httpServer.listen(port, () => {
         console.log(`HTTP Server running on port ${port}`);
diff --git a/static/geoportal-i3s.css b/static/geoportal-i3s.css
new file mode 100644
index 0000000000000000000000000000000000000000..e43bbdfe868d6fe315e04577ed1302639b8f0015
--- /dev/null
+++ b/static/geoportal-i3s.css
@@ -0,0 +1,6 @@
+#paneDiv {
+    padding: 10px;
+    max-width: 200px;
+    background-color: rgba(255, 255, 255, 0.8);
+    font-size: 1.1em;
+  }
\ No newline at end of file
diff --git a/views/arcgisclient.ejs b/views/arcgisclient.ejs
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..6b633ea5a79f0895255e68ad060616f3dccc6c84 100644
--- a/views/arcgisclient.ejs
+++ b/views/arcgisclient.ejs
@@ -0,0 +1,104 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
+    <title>i3s client</title>
+    <style>
+        html,
+        body,
+        #viewDiv {
+            padding: 0;
+            margin: 0;
+            height: 100%;
+            width: 100%;
+        }
+
+        #paneDiv {
+            padding: 10px;
+            max-width: 200px;
+            background-color: rgba(255, 255, 255, 0.8);
+            font-size: 1.1em;
+        }
+    </style>
+    <link rel="icon" type="image/ico" href="img/favicon.ico" sizes="16x16">
+
+    <link rel="stylesheet" href="https://js.arcgis.com/4.14/esri/themes/light/main.css" />
+    <script src="https://js.arcgis.com/4.14/"></script>
+
+    <script>
+        var urlParams = new URLSearchParams(window.location.search);
+        var i3s_url = "";
+
+        require([
+            "esri/Map",
+            "esri/views/SceneView",
+            "esri/layers/SceneLayer",
+            "esri/support/actions/ActionButton"
+        ], function (Map, SceneView, SceneLayer, ActionButton) {
+            // Create Map
+            var map = new Map({
+                basemap: "dark-gray",
+                ground: "world-elevation"
+            });
+
+            // Create the SceneView
+            var view = new SceneView({
+                container: "viewDiv",
+                map: map,
+                camera: {
+                    position: [-74.0338, 40.6913, 707],
+                    tilt: 81,
+                    heading: 50
+                }
+            });
+
+            // Create SceneLayer and add to the map
+            var sceneLayer;
+            if (urlParams.has('i3s_resource_url')) {
+                i3s_url = urlParams.get('i3s_resource_url');
+                console.log(`loading: ${i3s_url}`)
+                sceneLayer = new SceneLayer({
+                    url: i3s_url,
+                    popupEnabled: true
+                });
+                map.add(sceneLayer);
+                sceneLayer.when(function () {
+                    view.goTo(sceneLayer.fullExtent);
+                });
+            } else {
+                // ...
+            }
+            map.add(sceneLayer);
+            // Create MeshSymbol3D for symbolizing SceneLayer
+            var symbol = {
+                type: "mesh-3d", // autocasts as new MeshSymbol3D()
+                symbolLayers: [{
+                    type: "fill", // autocasts as new FillSymbol3DLayer()
+                    // If the value of material is not assigned, the default color will be grey
+                    // material: {
+                    //   color: [244, 247, 134]
+                    // }
+                }]
+            };
+            // Add the renderer to sceneLayer
+            sceneLayer.renderer = {
+                type: "simple", // autocasts as new SimpleRenderer()
+                symbol: symbol
+            };
+            view.ui.add("paneDiv", "top-right");
+        });
+    </script>
+</head>
+
+<body>
+    <div id="viewDiv"></div>
+    <div id="paneDiv" class="esri-widget">
+        <h1 style="line-height: 1em;">i3s client</h1>
+        <!-- <a id="tent" class="esri-button" href="./index.html" target="_blank" style="text-decoration: none; ">Back to STT
+            GeoPortal <br>(3D Tiles Client)</a><br /> -->
+    </div>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/views/cesiumclient.ejs b/views/cesiumclient.ejs
index b1b1e983965c569cd1850e411e5f716dd2c79ca3..b373a0995f9acbb09f12f59626c08b73c9b81837 100644
--- a/views/cesiumclient.ejs
+++ b/views/cesiumclient.ejs
@@ -1,98 +1,66 @@
-<!DOCTYPE html>
-<html>
+<html lang="en">
 
 <head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
-    <title>i3s client</title>
-    <style>
-        html,
-        body,
-        #viewDiv {
-            padding: 0;
-            margin: 0;
-            height: 100%;
-            width: 100%;
-        }
-    </style>
-    <link rel="icon" type="image/ico" href="img/favicon.ico" sizes="16x16">
-
-    <link rel="stylesheet" href="https://js.arcgis.com/4.14/esri/themes/light/main.css" />
-    <link rel="stylesheet" href="./geoportal-i3s.css" />
-    <script src="https://js.arcgis.com/4.14/"></script>
+    <meta charset="utf-8">
+    <script src="https://cesium.com/downloads/cesiumjs/releases/1.83/Build/Cesium/Cesium.js"></script>
+    <link href="https://cesium.com/downloads/cesiumjs/releases/1.83/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
+    <!-- <script src="https://cesium.com/downloads/cesiumjs/releases/1.68/Build/Cesium/Cesium.js"></script>
+    <link href="https://cesium.com/downloads/cesiumjs/releases/1.68/Build/Cesium/Widgets/widgets.css" rel="stylesheet"> -->
+</head>
 
+<body>
+    <div id="cesiumContainer" style="width: 100%; height:100%; margin:0;"></div>
     <script>
+        // Cesium.Ion.defaultAccessToken = '';
         var urlParams = new URLSearchParams(window.location.search);
-        var i3s_url = "";
-
-        require([
-            "esri/Map",
-            "esri/views/SceneView",
-            "esri/layers/SceneLayer",
-            "esri/support/actions/ActionButton"
-        ], function (Map, SceneView, SceneLayer, ActionButton) {
-            // Create Map
-            var map = new Map({
-                basemap: "dark-gray",
-                ground: "world-elevation"
-            });
-
-            // Create the SceneView
-            var view = new SceneView({
-                container: "viewDiv",
-                map: map,
-                camera: {
-                    position: [-74.0338, 40.6913, 707],
-                    tilt: 81,
-                    heading: 50
-                }
-            });
-
-            // Create SceneLayer and add to the map
-            var sceneLayer;
-            if (urlParams.has('i3s_resource_url')) {
-                i3s_url = urlParams.get('i3s_resource_url');
-                console.log(`loading: ${i3s_url}`)
-                sceneLayer = new SceneLayer({
-                    url: i3s_url,
-                    popupEnabled: true
-                });
-                map.add(sceneLayer);
-                sceneLayer.when(function () {
-                    view.goTo(sceneLayer.fullExtent);
-                });
-            } else {
-                // ...
-            }
-            map.add(sceneLayer);
-            // Create MeshSymbol3D for symbolizing SceneLayer
-            var symbol = {
-                type: "mesh-3d", // autocasts as new MeshSymbol3D()
-                symbolLayers: [{
-                    type: "fill", // autocasts as new FillSymbol3DLayer()
-                    // If the value of material is not assigned, the default color will be grey
-                    // material: {
-                    //   color: [244, 247, 134]
-                    // }
-                }]
-            };
-            // Add the renderer to sceneLayer
-            sceneLayer.renderer = {
-                type: "simple", // autocasts as new SimpleRenderer()
-                symbol: symbol
-            };
-            view.ui.add("paneDiv", "top-right");
+        var url_3dtiles_json = "";
+        var viewer = new Cesium.Viewer('cesiumContainer', {
+            // terrainProvider: Cesium.createWorldTerrain(),
+            baseLayerPicker: false,
+            vrButton: false,
+            geocoder: false,
+            navigationHelpButton: false,
+            selectionIndicator: false,
+            shadows: true,
+            timeline: true,
+            sceneModePicker: false,
+            imageryProvider: new Cesium.OpenStreetMapImageryProvider({
+                url: 'https://a.tile.openstreetmap.org/'
+            })
         });
+        if (urlParams.has('url_3dtiles_json')) {
+            url_3dtiles_json = urlParams.get('url_3dtiles_json');
+            console.log(`loading: ${url_3dtiles_json}`)
+            var tileset = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({
+                url: url_3dtiles_json
+            }))
+            Cesium.when(tileset.readyPromise).then(function (tileset) {
+                viewer.flyTo(tileset)
+                // var cartographic = Cesium.Cartographic.fromCartesian(
+                //     tileset.boundingSphere.center
+                // );
+                // var surface = Cesium.Cartesian3.fromRadians(
+                //     cartographic.longitude,
+                //     cartographic.latitude,
+                //     0.0
+                // );
+                // var offset = Cesium.Cartesian3.fromRadians(
+                //     cartographic.longitude,
+                //     cartographic.latitude,
+                //     50
+                // );
+                // var translation = Cesium.Cartesian3.subtract(
+                //     offset,
+                //     surface,
+                //     new Cesium.Cartesian3()
+                // );
+                // tileset.modelMatrix = Cesium.Matrix4.fromTranslation(translation);
+            })
+        } else {
+            // ...
+            
+        }
     </script>
-</head>
-
-<body>
-    <div id="viewDiv"></div>
-    <div id="paneDiv" class="esri-widget">
-        <h1 style="line-height: 1em;">i3s client</h1>
-        <!-- <a id="tent" class="esri-button" href="./index.html" target="_blank" style="text-decoration: none; ">Back to STT
-            GeoPortal <br>(3D Tiles Client)</a><br /> -->
-    </div>
 </body>
 
 </html>
\ No newline at end of file
diff --git a/views/geovolumes/collections.ejs b/views/geovolumes/collections.ejs
index b339435041bed6b6cd75e9806c11d1c9b7c097d3..bab83724ee4929a2e5aac7f2e9830f33e73794b6 100644
--- a/views/geovolumes/collections.ejs
+++ b/views/geovolumes/collections.ejs
@@ -77,7 +77,15 @@
                     <% if (collection_resource_updated_bbox["collections"][i].links[j]["title"]) { %>
                     <a href="<%= collection_resource_updated_bbox["collections"][i].links[j]["href"]%>" target="_blank"><%= collection_resource_updated_bbox["collections"][i].links[j]["title"]%></a> 
                     <% if (collection_resource_updated_bbox["collections"][i].links[j]["title"].includes("i3s") ) { %>
-                        <a href="i3s/?i3s_resource_url=<%= collection_resource_updated_bbox["collections"][i].links[j]["href"]%>" target="_blank"><span class="badge bg-primary">i3s client (ArcGIS JS)</span>  
+                        <a href="../i3s/?i3s_resource_url=<%= collection_resource_updated_bbox["collections"][i].links[j]["href"]%>" target="_blank"><span class="badge bg-primary">i3s client (ArcGIS JS) <i class="bi bi-box-arrow-up-right"></i></span>  
+                        </a> 
+                    <% } %>
+                    <% if (collection_resource_updated_bbox["collections"][i].links[j]["title"].includes("3D Tiles") ) { %>
+                        <a href="../3dtiles/?url_3dtiles_json=<%= collection_resource_updated_bbox["collections"][i].links[j]["href"]%>" target="_blank"><span class="badge bg-warning text-dark">3D Tiles client (CesiumJS) <i class="bi bi-box-arrow-up-right"></i></span>  
+                        </a> 
+                    <% } %>
+                    <% if (collection_resource_updated_bbox["collections"][i].links[j]["title"].includes("gltf") ) { %>
+                        <a href="https://gltf-viewer.donmccurdy.com/#model=<%= collection_resource_updated_bbox["collections"][i].links[j]["href"]%>" target="_blank"><span class="badge bg-success">GLTF viewer (donmccurdy) <i class="bi bi-box-arrow-up-right"></i></span>  
                         </a> 
                     <% } %>
                     <br>
@@ -103,11 +111,17 @@
                             <% for(var k=0; k < collection_resource_updated_bbox["collections"][i].children[j].links.length; k++) { %>
                                 <% if (collection_resource_updated_bbox["collections"][i].children[j].links[k]["title"]) { %>
                                 <a href="<%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["href"]%>" target="_blank">
-                                    <%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["title"]%>
-                                </a> 
+                                    <%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["title"]%></a> 
                                 <% if (collection_resource_updated_bbox["collections"][i].children[j].links[k]["title"].includes("i3s") ) { %>
-                                    <a href="<%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["href"]%>" target="_blank">
-                                        i3s client by ArcGIS JS
+                                    <a href="../i3s/?i3s_resource_url=<%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["href"]%>" target="_blank"><span class="badge bg-primary">i3s client (ArcGIS JS) <i class="bi bi-box-arrow-up-right"></i></span>  
+                                    </a> 
+                                <% } %>
+                                <% if (collection_resource_updated_bbox["collections"][i].children[j].links[k]["title"].includes("3D Tiles") ) { %>
+                                    <a href="../3dtiles/?url_3dtiles_json=<%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["href"]%>" target="_blank"><span class="badge bg-warning text-dark">3D Tiles client (CesiumJS) <i class="bi bi-box-arrow-up-right"></i></span>  
+                                    </a> 
+                                <% } %>
+                                <% if (collection_resource_updated_bbox["collections"][i].children[j].links[k]["title"].includes("gltf") ) { %>
+                                    <a href="https://gltf-viewer.donmccurdy.com/#model=<%= collection_resource_updated_bbox["collections"][i].children[j].links[k]["href"]%>" target="_blank"><span class="badge bg-success">GLTF viewer (donmccurdy) <i class="bi bi-box-arrow-up-right"></i></span>  
                                     </a> 
                                 <% } %>
                                 <br>
@@ -126,6 +140,7 @@
         
     </div>
 
+
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/js/bootstrap.bundle.min.js"
         integrity="sha384-gtEjrD/SeCtmISkJkNUaaKMoLD0//ElJ19smozuHV6z3Iehds+3Ulb9Bn9Plx0x4" crossorigin="anonymous">
     </script>