Built in the early 13th century a few kilometres south of Delhi, the red sandstone Qutub Minar is 72.5 m high, alternating angular and rounded flutings. The vast archaeological area around it contains funerary buildings, notably the magnificent Alai-Darwaza the masterpiece of Indo-Muslim art (built in 1311), and two mosques, including the Quwwatu’l-Islam, the oldest mosque in northern India.