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Photo: Carole Raddato, CC BY-SA 2.0 via Wikimedia Commons
One of the oldest churches of Christianity, where St Peter preached, though its earliest structures are from 4th or 5th century. It's a cave on a cliff face recessing 13 m. Around 1100 the Crusaders enlarged the cave and added a stone façade, which was rebuilt in 1863. The statue of St Peter above the altar is from 1932.
The Church of Saint Peter near Antakya (Antioch), is composed of a cave carved into the mountainside on Mount Starius with a depth of 13 m (42 ft.), a width of 9.5 m (31 ft.) and a height of 7 m (23 ft). The church is not to be mistaken with the former cathedral of Antioch, the church of Cassian which was also called church of St. Peter.
© OpenStreetMap contributors
They were preparing to build a hotel in 2009 when they found remains of ancient Antioch, so they mounted the hotel on steel pillars and created a museum below. There's an ancient road pavement, a ruined bathhouse, and Roman floor mosaics.
Brilliant collection of classical mosaics, coins, sarcophagi, and Iron and Bronze Ages artefacts. It suffered minor damage in 2023 and is being repaired rather than rebuilt.
Bayazid Bastami (d 875 AD) was a Sufi mystic. The site on an outcrop was originally the castle of Darb-ı Sak, or Trapessac under the Knights Templar, and later a retreat for ascetic dervishes. One of the sarcophagi within is said to hold his remains, but his name means he came from Bastam in Semnan Province of Iran and the shrine there has a stronger claim. The Alaybeyli shrine was badly damaged in the 2023 earthquake and restoration continues.