You can explore New York in glorious 3D on Cesium. In New York City Cesium uses NYC DoITT's 3D Building Massing Model of New York City to help to bring the city alive.
NYC DoITT's 3D building model was created from a 2014 aerial survey of the city. The building models include detailed pitched roofs and roof appendages such as chimneys, parapets and spindles. If you want to use the 3D buildings