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Atatürk spent the night of 18 Feb 1935 here and it's been preserved as a museum, which remains closed.
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Small museum of local prehistory, history and crafts.
Richly decorated dripstone cave, discovered in 1948 during works on the harbour. The air within is very humid and laden with CO₂, which they implausibly tout as a remedy for asthma.
Kızıl Kule
Redbrick hexagonal tower 33 m high, completed in 1226 by Ebu Ali Reha of Aleppo. There's a small museum display within, and you can climb the 78 steep stairs for harbour views.
Tersane
South of the beach below the Red Tower, these are five vaulted drydocks built in 1221.
İç Kale
This area commands great views and contains a Byzantine church, cisterns and storerooms.