Market
This is an art test I took a few months ago. The assignment was to construct an environment with a limit of 20K tris, and 18MB of textures.
I ended up using 15,816 tris, and 17.7MB of textures.
The primary wall surfaces use a set of 1024 attribute maps (color, alpha, bump, spec). The wall fan uses 256 maps, and the rest use 512 maps. I also used a few low res tiles for the interior. These are not pictured below, but are included in the overall texture budget