Various web apps to demonstrate and use 3D web mapping. Sources for these apps in NLExtract GitHub.
OpenTopo in Cesium Viewer - viewer with OpenTopo tiles as imagery layer in CesiumJS
Ditto with Relief map from AHN2 - viewer with AHN2 Relief Map tiles as imagery layer in CesiumJS
Historic Map in Cesium Viewer - viewer with Bonnebladen 1925 tiles as imagery layer in CesiumJS
Top10NL3D on OpenTopo in Cesium Viewer - viewer with OpenTopo 800px/km and 3DBuildings from Top10NL3D (Valkenburg)
Top10NL3D on OpenTopo in OpenLayers3+Cesium Integrated - ditto, but using OL3-Cesium integration
Navigation in examples:
Panning Mouse Left click-hold + drag Zooming Right click-hold + drag, or Mouse wheel scroll Rotating/tilting Middle click-hold + drag, or CTRL + Left click-hold + drag