Great Tomb of Nazarick
The Great Tomb of Nazarick in Overlord is an underground tomb, once an unconquered guild dungeon in Yggdrasil and headquarters of Ainz Ooal Gown, transported whole into the New World at the game's shutdown.
Deep in a poison swamp of the game Yggdrasil lies the headquarters of the guild Ainz Ooal Gown, and Overlord begins on the night that base stops being part of a game. The Great Tomb of Nazarick is an underground necropolis once recommended as a challenge for parties of level 80 and above; the guild cleared it on the first attempt, received the World Item called the Throne of Kings, and made it their home.
As a guild base it repels every invasion, including an alliance of some fifteen hundred players and mercenary NPCs that is stopped partway through the 8th Floor. Its levels are held by Floor Guardians and legions of custom NPCs. At the moment of Yggdrasil's shutdown the tomb is carried out of the marshes of Helheim and set down in grassland near the Great Forest of Tob, its servants no longer mere data.
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