It's one of Delhi's major attractions. It's the tomb of the famous Sufi saint Nizam-ud-Din Auliya. Inside the premises of the shrine is a tank which is surrounded by many other historically significant tombs. The shrine also has the tomb of Amir Khusru and the grave of princess Jahanara, the daughter of Emperor Shah Jahan. It is worth visiting the shrine at around sunset on Thursdays, as it is a popular time for worship, and Qawwali singers start performing after the evening prayers.