If you only have a day in Delhi, make sure you do visit the following places:

Qutub Minar : 73m tapering tower built in 1193 by Qutab-ud-din Aibak after defeat of Delhi's last Hindu kingdom. Humayun’s Tomb : Opulent red-sandstone tomb of Mughal Emperor Humayun, built in 1572 & surrounded by formal gardens. Children's Park : Playful park featuring jungle gyms, slides & swings, along with whimsical sculptures. Children's Park : Playful park featuring jungle gyms, slides & swings, along with whimsical sculptures. India Gate : Imposing Arc de Triomphe-style gate commemorating the Indian soldiers killed in the First World War. Rajpath : Rajpath is a ceremonial boulevard in New Delhi, India, that runs from Rashtrapati Bhavan on Raisina Hill through Vijay Chowk and India Gate, National War Memorial to National Stadium, Delhi. Red Fort : Landmark 17th-century Mughal fortress built in towering red sandstone, now a complex of museums and Mughlai cuisine.