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Striking modern mosque built in 2004, with a rooftop resembling a nomad's tent and tentpole-like minarets. It's similar to Faisal Mosque in Islamabad but modern styles are rare in Turkey, where religious conservatives insist that new mosques are retro-Ottoman.
© OpenStreetMap contributors
Ceneviz Kalesi
This was built some time between 1204 and 1261 after the Genoese captured Istanbul and fortified all along the Black Sea coast. It's just a small crumbling bastion, but you come for the clifftop location and nearby beach.
Decorated karstic show-cave, you see about a third of its 1 km extent. Wear stout footwear.