The Sultanahmet Mosque, which is known as the Blue Mosque, is one of the most fascinating architectural masterpieces in Istanbul. It dominates the skyline of Istanbul with its cascading domes and six slender minarets.
The Blue Mosque was built during the reign of Sultan Ahmet I (1609-1616) and stands in the heart of the old city, Sultanahmet Square, facing the Hagia Sophia, with which it seems to have been competing for magnificence for centuries.
The name "Blue Mosque" comes from the beautiful blue tiles inside. There are more than 20,000 pieces of handmade blue tiles and are the finest examples of the 17th-c. Iznik designs such as tulips, carnations, roses, and the tree of life.
Hundreds of people still use the mosque for daily prayer and worship. It is closed during worship time (namaz).