Blue Mosque (Sultanahmet Camii)
With its six minarets and sweeping architecture the Sultan Ahmed or Blue Mosque in Istanbul impresses from the outside. While still used as a mosque, the Blue Mosque has also become one of the most popular tourist attractions in Istanbul. It was built between 1609 and 1616 and like many other mosques contains the tomb of the founder. Inside the mosque, the high ceiling is lined with the 20,000 blue tiles with different patterns that give the mosque its popular name.