Stadium at Olympia (monument) built
500 BCE.
Shown on the map at 37.639°, 21.633°.
The Stadium at Olympia (also called the Olympia Stadium or the Olympia Stadion) is an ancient stadium at the archaeological site of Olympia, Greece, located to the east of the sanctuary of Zeus. It was the location of many of the sporting events at the Ancient Olympic Games.
Text from the Wikipedia article Stadium at Olympia, licensed CC BY-SA 4.0.