The Church of Christ of Jerusalem.

The remains of this fine Byzantine church can be seen between Horio (the old capital of the island) and Panormos and is one of the oldest sites of the island. It was built on the site of an ancient temple dedicated to Apollo.

The Byzantine emperor Arcadius ordered the construction of this church in order to show its gratitude to Christ for saving him from a storm, on his way from Jerusalem, and finally made him anchor his ship on Kalymnos.