Göbekli Tepe

Professor Klaus Schmidt was sure that Gobekli Tepe was a temple where ritual ceremonies took place.

An excerpt from the article 18 facts about Göbekli Tepe
The Italian astrophysicist Giulio Magliego claims that the temple practiced worship of Sirius, the brightest and one of the nearest stars in the southern sky, located in the constellation Canis Major. It is indicated by the construction of rings of stone pillars, through which the position of Sirius could be determined.