This mosque was built by Sultan Ahmet I between 1609 and 1616 and is located in the district of old Istanbul that is named after this Ottoman Sultan and it is distinguished by its six slender minarets. The central dome is 43 m in height and 33.4 m in diameter and there are 260 stained glass windows throughout the mosque. Due to the intricately decorated blue, green and red tiles of its interior, it has long been referred to as the Blue Mosque. These tiles, produced and painted by hand in Iznik (ancient Nicaea), are an attraction in and of themselves.