Behind the Old Port and Simi Restaurant in Thassos Town is the island’s archaeological museum. Originally built in 1934 by the French Archaeological School, who still conduct excavations on the island. The museum was extensively renovated and reopened to the public in 2010.

In the entrance hall is an archaic ram-carrying kouros, an emblematic find of Thassos, accompanied by digitised visual material on the history and techniques of great sculpture. The kouros with the ram, three and a half meters high, dates back to 600 BC. It was found in 1911, when the French School began systematic excavations on the Acropolis. It was reused in 5 pieces in antiquity as building material in sections of the town’s monumental defensive wall. The archaic relief with a goddess in a niche is also exhibited in the same hall. It is a votive relief from 490 BC that depicts two young girls from the left bringing gifts to a goddess seated in a niche.

The museum is modern and extensive in its coverage of the history of the island from prehistory to more modern times, and well worth a visit. It is located next to the extensive remains of the ancient agora (marketplace).