Atlantida

Poseidon is the god of the sea.
Poseidon with his wife Amphitrite and his son Triton lived in a luxurious palace at the bottom of the sea, surrounded by Nereids, sea horses and other inhabitants of the sea, rushing about the sea on a chariot, dragged by horses with long manes and a trident, with which he summoned storms, broke cliffs and created wells. He created the legend of Atlantis.

The only piece of Atlantis that has been found was taken up from the sea and made into a luxurious art-hotel.