Place d'Armes

The Place d'Armes, referred to as Plaza de Armas under Spanish rule, was a square in colonial New Orleans, surrounded by notable landmarks including Saint Louis Cathedral and the governor's mansion. It would later be renamed to Jackson Square, a name it still carrries today.

The square functioned as a public meeting place, but was also used for drills by the militia. As such, a fair amount of tents and supplies were set up around the area, as well as a few armaments, such as cannons. The square was also used for hangings and beheadings, with gallows set up in the center.

With the Louisiana Rebellion in 1768, the Place d'Armes had become largely blocked off, due to many of the streets having been barricaded. During this time, it became the site of a massive riot incited by the Assassin Aveline de Grandpré, in an effort to draw out governor de Ulloa.

Over the years, the square gradually lost its military function, becoming a well-known park.

Reference

 * Assassin's Creed III: Liberation