Built in 1753-54 for Safdarjang, the Nawab of Awadh and prime minister of the Mughal Empire, this is widely considered the last significant monument of the Mughal era in Delhi. The red and buff sandstone mausoleum sits at the centre of a large char bagh (four-part garden), with double-storeyed towers at each corner and a broad central dome.
The architecture marks the transition from Mughal grandeur to something more ornamental and less assured — compare it with Humayun's Tomb, built two centuries earlier, and the decline is visible. But the gardens are spacious and relatively uncrowded, the stonework has a faded elegance, and the corner towers offer views across south Delhi. It's a peaceful stop, especially in the early morning.
The tomb is just south of Lodhi Gardens and can easily be combined with a walk through that park. Entry requires a ticket, available at the gate.