I made this post for people to find some cool ass looking buildings that would be a challenge to create in the Source engine. Here are some nice ones:
http://larscapes.com/brussels/royal_palace.html
http://larscapes.com/brussels/grand_place.html
http://larscapes.com/brussels/old_england.html
http://larscapes.com/brussels/old_church.html
The whole site is filled with amazing buildings