Markas Marine "Enies Lobby"

Enies Lobby, also known as The Judicial Island (司法の島 Shihō no Shima^?), was a government-controlled stronghold in the Grand Line together with the Marine Headquarters and Impel Down. Enies Lobby is located on an island referred to as both the "afternoon island" (昼島 hiru-jima^?) and the "never-night island" (不夜島 fuya-jima^?).
 

Enies Lobby leads to Impel Down and the Marine Headquarters directly. Because of this, there are many government agents stationed here, roughly 10,000 men, a mix of those from both the World Government and the Marines. The island also has a courthouse, which makes it easy to transfer high-level criminals through Enies Lobby and directly into Impel Down, or to the Marine HQ. Due to recent events, the island has been completely annihilated and left in ruins due to the effects of a Buster Call.^[2] It is unknown if it was rebuilt during the time skip.

Sumber : http://onepiece.wikia.com/wiki/Enies_Lobby