Stromberg's obsession with the ocean encouraged him to construct Atlantis. To all extents, the structure is a palace in both scale and opulence, looking like a giant 4-legged metal frog. Similar to the grand volcano fortress of Blofeld, a major advantage of Atlantis is its ability to remain undetected; in the latter's case by submerging itself underwater so as not to be seen or detected. Located off the coast of Sardinia, Italy, Atlantis has everything to support life above and below water for any length of time. In fact, Atlantis is more like a city, able to support dozens, if not hundreds, of people. The structure consists of the dining room, Stromberg's study & aquarium, speedboat docks, 4 helipads (one on each leg), laboratory, long corridors and the shark tank. Atlantis has a number of elevators, but in the main one Stromberg has a trap door which opens by the push of a button sending enemies and disobedient members of staff to the shark. When Stromberg learns his assistant has given the tracking plans to Aziz Fekkesh and Max Kalba, he opens the trap door and sends her into the shark tank where she is eaten. Stromberg later attempts to kill Bond with the trap but he avoids the death by shark, by balancing himself on the edges of the floor. The shark is later killed by Jaws and his metal munchers when Bond drops him into the tank.
Atlantis is destroyed by the USS Wayne and it sinks to the bottom of the ocean.
Behind the scenes
According to production designer Ken Adam, for The Spy Who Loved Me the renowned set designer decided to experiment with curved shapes for the scenery, as he felt all his previous setpieces were "too linear". This was demonstrated with the Atlantis, which is a dome and curved surfaces outside, and many curved objects in Stromberg's office inside.
In October of 1976, the second unit travelled to Nassau to film the underwater sequences which included the Atlantis model. Stromberg's shark tank was also filmed in the Bahamas, using a live shark in a saltwater swimming pool.