Olympia is an archaeological site and a UNESCO World Heritage Site located in the western part of the Peloponnese peninsula in Greece. It is widely known as the birthplace of the Olympic Games, which were first held here in 776 BC and continued to be held every four years until AD 393 when they were banned by the Roman Emperor Theodosius I.

The ancient site of Olympia contains a number of ruins and archaeological remains, including the remains of temples, altars, stadiums, and other public buildings. The most famous structure at Olympia is the Temple of Zeus, which was built in the 5th century BC and housed one of the Seven Wonders of the Ancient World, a giant statue of Zeus.

Other notable structures at Olympia include the Temple of Hera, the Palaestra, the Philippeion, and the Stadium. The stadium is particularly noteworthy as it is one of the oldest and largest ancient stadiums ever discovered, with a capacity of up to 45,000 spectators.

Today, the ancient site of Olympia is a popular tourist destination and attracts visitors from all over the world. The archaeological site is open to the public and visitors can explore the ruins and learn about the history of the ancient Olympic Games. The Olympic flame is still lit in Olympia every four years and carried by runners to the host city of the modern Olympic Games.