Turkey Action & adventure, Castles & palaces, Historical, Military + Sunset & sunrise pictures

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Once a church, then a Byzantine cathedral, later a mosque and now a monument, this iconic building is a national treasure.

Once a church, then a Byzantine cathedral, later a mosque and now a monument, this iconic building is a national treasure.

Once a church, then a Byzantine cathedral, later a mosque and now a monument, this iconic building is a national treasure.