The Tomb of the Unknown Soldier is a war memorial located in Syntagma Square in Athens, in front of the Old Royal Palace. It is a cenotaph dedicated to the Greek soldiers killed during war. It was sculpted between 1930 and 1932 by sculptor Fokion Rok.
The tomb is guarded by the Evzones of the Presidential Guard.
Wikipedia https://en.wikipedia.org/wiki/Tomb_of_the_Unknown_Soldier_(Athens)
Address Αθήνα 10671, Greece
Coordinates 37°58'31.264" N 23°44'10.916" E