The stone figure of Bruxelles is above third plinth from left outside Gare du Nord.
The figure of Brussels by François Jouffroy (1865) is one of the eight larger statues on the cornice line of Gare du Nord, 
representing international destinations reached from Paris by this railway (at that time) as well as Paris.
They are from left to right:
Frankfurt
Amsterdam
Warsaw - also by François Jouffroy
Brussels
Paris
Berlin
Cologne
London
Vienna
Bruxelles wears a gown draped over her right shoulder and a crown. She leans on a large shield with a lion.