The square's grand, spacious effect is completed to the north by an arc de triomphe (dedicated to Louis XV) at the entrance to the long Place de la Carriyre ' also graced by 18th-century mansions and Jean Lamour's iron grilles.
Due south from the square is an arc de triomphe. 
mnli hypothesis: Due south from the square is an arc de triomphe.  premise: The square's grand, spacious effect is completed to the north by an arc de triomphe (dedicated to Louis XV) at the entrance to the long Place de la Carriyre ' also graced by 18th-century mansions and Jean Lamour's iron grilles.