Istanbul's Sultan Ahmed Mosque, the landmark of the city
The world's seventh largest mosque, the Hassan II Mosque in Casablanca, Morocco, is among the world's most beautiful mosques.
The Sheikh Zayed Mosque in Abu Dhabi. Click to view more photos of mosques from around the world.
The Takyeh Amir Chakhmagh Mosque in Yazd, Iran
Can you identify this mosque and the country in which it is located?