Cloaca Maxima

The Cloaca Maxima is a location in Rome and the city's primary sewer system. The location appears as a Secret Location and Lair of Romulus in Assassin's Creed: Brotherhood.

Constructed in ancient Rome in order to drain local marshes and remove the waste of one of the world's most populous cities, it carried an effluent to the River Tiber which ran beside the city, making it one of the most innovative pieces of infrastructure of its time. It is is one of the world's earliest sewage systems.

The name literally means Greatest Sewer.