Blue Mosque, Istanbul
The Blue Mosque, or Sultan Ahmed Mosque, is a historic mosque in Istanbul, Turkey, built from 1609-1616 during Ahmed I's reign. Known for its blue-tiled interior, it features a main dome, six minarets, and eight secondary domes. The mosque is still used for daily prayers and is a major tourist attraction due to its unique architecture and a large courtyard. It's located opposite the Hagia Sophia, another iconic Istanbul landmark.