Pier 400 seems to be the scapegoat of illegal imports, such as military-grade weapons and drugs. There was notably an incident where a cargo ship was transporting a nuclear weapon. The ship was raided and its precious cargo was stolen. Pier 400 is also the workplace of Floyd Hebert, and one of the main operational places of Merryweather Security. A small railyard is located in the area, covered by a large garage that has "Pier 400" written on the walls. The yard has some rolling stock stored there, such as tanker cars and box cars.
- This location was mentioned in the Los Santos Exposed video, leaked by Rockstar.
- It is also mentioned in The Underbelly Of Paradise.