CZML streaming server/client code for massive 3D bulidings?

Hello,
I’m quite new to Cesium. I’ve explored it’s documentation and surfed the web looking for 3D buildings vvisualization examples with Cesium, but I haven’t found very much. I’ve read the EventSource and Streaming paragraph [1] but I haven’t found any working implementation. Is there something ready to provide streamed 3D content? It would be great to have providers like for terrain, and maybe, one day, a WFS based provider like the Geoserver Terrain Provider plugin…

Giovanni

[1] https://github.com/AnalyticalGraphicsInc/cesium/wiki/CZML-Structure#eventsource-and-streaming