They currently host the Edward Steichen Award at the BOZAR. He was a Luxembourgish-American photographer who is most famous for his fashion photographs and beautiful portraits. Also he was a quite funny bugger as you can see in the picture.
The exhibition does not show any of his works but a few of the winners of his award of the past few years. However, in the entrance hall, in case that you are interested, you will find some books (on the tables) where you can admire his masterpieces as well.
It is a rather small exhibition (only 3 rooms) but hey, it's for free and perfect for a rainy afternoon... like today.