Our new office is just next to the gardens "le Mont des Arts". Meaning the mountain of the arts. And on that hill it's full of art and believe me. Every possible style of architecture is there. Some examples: the Royal library of belgium, the Royal Museums of fine arts, the Museum of music instruments, the Rene Magritte museum, the center for fine arts Brussels Bozar etc, etc...
The list is so long, you can get lost there a couple of days.
But the most important, the place is such a treat for the eye. If you like 50's, art nouveau, art deco, 70's, medieval, 19th century, or flemish baroque you will all find it there next to each other. We're used to that in Brussels. Some people find it strange. Putting a calder in a fountain in front of an art nouveau building, I suppose some will find this too much!