Old Delhi, Delhi
India's largest mosque, commissioned by Mughal emperor Shah Jahan and completed in 1656 after six years of construction. Its courtyard can hold up to 25,000 worshippers, and its three great gates, four towers and two 40-metre minarets dominate the Old Delhi skyline. Relics attributed to the Prophet Muhammad are preserved inside. Climbing the southern minaret offers one of the best panoramic views over the walled city.