Humayun's Tomb (Unesco World Heritage site) - is the tomb of the Mughal Emperor Humayun in Delhi. Constructed for the Mughal emperor in the mid-16th century by Haji Begum, Humayun's Persian-born wife, the tomb marries Persian and Mughal elements, with restrained decoration enhancing the architecture.

Qutub Minar (a UNESCO World Heritage Site) - The Qutub Minar that gives the complex its name is an unmissable, soaring Afghan-style victory tower and minaret, erected by sultan Qutb-ud-din in 1193 to proclaim his supremacy over the vanquished Hindu rulers of Qila Rai Pithora.

Designed for tranquil worship, Delhi's beautiful Lotus Temple offers a rare pocket of calm in the hectic city. It is shaped like a lotus flower, with 27 delicate-looking white-marble petals. The temple was created to bring faiths together; visitors are invited to pray or meditate silently according to their own beliefs.

This imposing 42m-high stone memorial arch was designed by Lutyens in 1921. It pays tribute to around 90,000 Indian army soldiers who died in WWI, the Northwest Frontier operations and the 1919 Anglo-Afghan War.

This circular, colonnaded building, designed by Edwin Lutyens and Herbert Baker, was where the 1947 handover of power from Britain to the newly independent India took place, and parliament still meets here.

Rashtrapati Bhavan or President House is an official residence of the President of India.Formerly home to the British Viceroy, the President’s House has 340 rooms, with 2.5km of corridors, and it's fascinating to take a peek inside.