The Monastery of Arkádi (GR:Αρκάδι) built during the last Venetian period, it consists of a large set of fortress-like buildings. The main building included the cells, the warehouses where the agricultural products were treated and stored, the stables. In a word, it was a well-equipped little fortress where people could find refuge in times of trouble. There is an impressive church, with two naves dedicated to Saint Constantine and Saint Helen, and to Our Lord. Due to the holocaust it suffered in 1866, Arkadi has become the island's most famous monastery.

It stands 37 km south of Rethimnon, in an imposing landscape which is mentioned at the mid-19th century diary of Th. Spratt (admiral of the British Royal Navy), as "one of the happiest places to withdraw from trials and responsibilities of life".There are lots of legends concerning the foundation of the monastery, which is believed that started during the Venetian occupation of the island. A number of its monks activities made the monastery one of the richest of western Crete and due to its isolated position it played important role in Cretan revolts against the occupying forces. A substantial number of icons and other items is kept in the Museum of the Monastery of Preveli amongst them the miracle - working Eulogistic Cross of Efraim Prevelis.