A complete sets of 3D tiles representing the whole city of Bordeaux was been released in Open-data in 2014. However, the format (.3ds) was proprietary and not adapted to the web.
Why would we want to have it on the web ? Because there are so many nice applications that could be invented based on an open 3d model of the city. One could think of architecture competitions, artistes showing their opera in augmented reality, without mentioning roadwork optimization.