Ancient Thira is an excavated archeological site which was named after Theras, the island’s founder, and was inhabited from the 9th century BC until the early Byzantine era. 

Ancient Thira includes ruins of various structures such as temples, houses, theaters, and public buildings. 

The excavated artifacts give insight into the island’s history and culture, including trade relations with nearby islands and evidence of the area’s participation in the Persian wars. 

Visitors to the site can also enjoy panoramic views of the surrounding sea and countryside.