The church of Agia Triada (Holy Trinity) belongs to the architectural type of building with a free cross with dome and dates back to the late 15th or early 16th century. The antennas of the cross are covered by slightly pointed arches, at the intersection of which rises the octagonal dome. The monument was built of local porolith stone, while some of its sections, like the arch and the dome are characterized by extreme thoroughness in their masonry.

The pictorial program that was decorating the interior of Agia Triada is being partially saved today. In the quarter sphere of the arch we can see the Prophetic Vision of Ezekiel, while in the half-cylinder we can see the Communion of the Apostles and the collaborating Hierarchs. The representation of the Ascension covers the arch of the Sanctuary while the niche of prosthesis is decorated with the representation of the Akra Tapeinosi.

The illustration of the right part of the cross church is of major importance, as it includes episodes from the book of Genesis. Among them is displayed Adam giving names to animals, the Original Sin, the Banishment from the Garden of Eden, Abel’s Sacrifice, and the Flood of Noah.

The murals of Agia Triada belong to the eclectic trend of Rhodian painting and it is believed that they were made around 1500. While this church is protected by the Ephorate of Antiquities of the Dodecanese, ceremonies are held a few times a year. Either you are out for sightseeing all the churches and temples of the old town, or you are just walking around the Evreon Martyron Square, visiting this church will travel you back to 15th century.