The Blue Mosque, Sultan Ahmet Mosque or Sultanahmet Mosque (in Turkish Sultan Ahmet Camii or Sultanahmet Camii) is one of the historic mosques of Istanbul. It is particularly known for the predominantly blue ceramics which decorate the interior walls, and have earned it its name in Europe.
It was built between 1609 and 1616, during the reign of Sultan Ahmet I. Like many other mosques, it also includes the tomb of the founder, a madrasah and a hospice. The Sultanahmet Mosque has become one of Istanbul's most popular tourist attractions.
It was a starting point for the pilgrimage to Mecca and has the privilege of having six minarets: the Sacred Mosque of Mecca had as many at the time, but has since received a seventh.