Delhi's Jama Masjid or Friday Mosque is the largest mosque in India, and one of the largest in the world. It is located in the heart of the old town and with the Red Fort dominates Old Delhi. It was the last great building completed by the Mughal Emperor Shah Jahan in the mid-17th century, and is a fine example of Mughal architecture. The mosque is open to the public (except during prayers) and it is possible to climb one of the minarets for a commanding view over the city.