Tomb of Leonidas

Leonidaion is an ancient, ruined structure also known as “the tomb of Leonidas”.

Ancient lore places the tomb of Leonidas in Sparta, opposite the theater, but many dispute this.

The structure is a temple-form enclosure with two spaces. Its elaborate, rectangular stone blocks of unusual proportions are quite impressive.

Source:

http://www.exploresparta.gr/tourism/en/leonidaion/