The Blue Mosque (called Sultanahmet Camii in Turkish) is an historical mosque in Istanbul. The mosque is known as the Blue Mosque because of the magnificent blue tiles surrounding the walls of interior design. The mosque was built between 1609 and 1616 years, during the rule of Ahmed I. Like many other mosques, it also comprises a tomb of the founder, a madrasa and a hospice. Still a functioning mosque, the Sultan Ahmed Mosque has also become a popular tourist attraction in Istanbul.