Definitely, owls are ubiquitous in Brussels. When walking through the streets of Brussels in one of my hunts for owls (and other creatures) I found this magnificent pair (or couple) of owls perched on the facade of an equally gorgeous art nouveau house in the Avenue Molière, in the section belonging to the commune of Forest/Vorst.
I do not know the name of the architect who designed the house but the house has the looks of those designed by Jena Baptiste Dewin. Perhaps readers could help me in finding the name of the architect and the year the house was built.