Turkey: Istanbul – Sultan Ahmet Mosque & Hippodrome

Sultan Ahmet Mosque aka Blue Mosque is one of the most famous and beautiful mosques in the world. Built in 1609 to 1616 by Ahmet I, the massive mosque has five domes, six minarets, and eight secondary domes. Inside, it has beautifully decorated walls, ceilings, and stained glass windows. The blue color dominates here.