The Windward Home is a floating think tank of mystics, scientists and philsophers run by Jimmy Lockhart and Elsa Magnusson. It stays in international waters in order to avoid being beholden to any government of the world. The think tank tries to broker non-violent solutions to world problems.
After Atlantis was destroyed by the Spectre, the Windward Home managed to find the ghost of Vulko. When Joseph Curry arrived, Vulko was able to help him with both his family history (and link with the real Aquaman) and with the prophecies of the Dweller.
The Windward Home is a neutral place, and no fighting is allowed on or around it.