Ancient agora of Athens, Archaeological site northwest of Acropolis, Athens, Greece.

The Ancient Agora is an archaeological site northwest of the Acropolis containing the remains of administrative buildings, temples, and commercial structures. The ruins spread across a large area and reveal how a classical marketplace was organized.

The Agora served as the main marketplace and civic center of Athens from the 6th century BCE until invaders destroyed it in 267 CE. The site continued to be modified during the Roman period and later occupations.

The museum in the Stoa of Attalos displays the clepsydra water clock, the kleroterion allotment machine, ostraka used in ostracism votes and voting tokens, showing how Athenian democracy worked. Inscriptions record the city's administration and diplomacy. The collection also covers occupation of the area from the Geometric period to medieval times.

The site is open daily and best visited in the morning when it is cooler. Wear comfortable shoes and bring water, as the area is open and exposed to direct sun.

The Temple of Hephaestus retains its original roof and columns from the 5th century BCE, making it the best-preserved classical temple in Greece. This rare completeness reveals ancient building techniques and how the structure has withstood centuries of use.