The Monastery of Agios Antonios was built at the top of the pointy Kefalos Hill near Marpissa. It was founded in 1597 and is one of the oldest monasteries on the island. It has been inhabited by monks since 1642, and in the 18th century it became the property of Vlachias Nikolaou Mavrogeni and flourished financially. The monastery closed in 1834, due to the small number of monks. The monastery takes its name from its church, which is impressive for its size, with two domes and Ionic columns supporting the altar.In spring, the monastery is open to the public and tours are offered.