OpenBuildings

OpenBuildings is a possibly the worlds biggest mashup of  freebase and wikipedia with the aim to "collaboratively archive the world's built environment."

It even features the Fizzy Bottle Roof Project !

• openbuildings.com/buildings/fizzy-bottle-roof-project

See also

• openbuildings.com/apps
• openbuildings.com/blog
• openbuildings.com/pages/about