Ios Churches & Monasteries - The charming Agia Irini Church in Ios, Greece is located conveniently near the port. Dating back to the 17th century, this church is a unique sight with two altars, one of which is believed to have been used for Orthodox worship and the other for Catholic worship. The church's entrance is on the right and offers picturesque views, making it a must-see attraction for visitors to Ios.

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