About Fortifications of Brussels
Defensive Walls, Historic, Fortifications, Interesting Places
There were two stages of fortifications of Brussels, the first walls, built in the early 13th century, and the second walls, built in the late 14th century and later upgraded. Today, only a few sections of either remain.
Source From:
Wikipedia
R20, Ville de Bruxelles - Stad Brussel, Brussel-Hoofdstad - Bruxelles-Capitale, Région de Bruxelles-Capitale - Brussels Hoofdstedelijk Gewest, België - Belgique - Belgien