The Sultan Ahmet Mosque (Turkish: Sultanahmet Camii) is a historical mosque in Istanbul, the largest city in Turkey and the capital of the Ottoman Empire (from 1453 to 1923). The mosque is popularly known as the Blue Mosque for the blue tiles adorning the walls of its interior.
It was built from 1609 to 1616, during the rule of Ahmed I. During the construction of magnificent mosque, he has worked as simple worker all day, and according to a narration of his daughter, who saw his father in a dream after his death, he earned place in paradise just because he worked in the construction like a simple worker. Like many other mosques, it also comprises a tomb of the founder, a madrasah and a hospice. While still used as a mosque, the Sultan Ahmed Mosque has also become a popular tourist attraction.