Red Fort, or whatever it is called Lal Kila, was built during the reign of Mughal emperor Shah Jahan. By his order, in 1639, it began construction of the fortress in the new capital of the state, transferred to Shahzhahanabad (Old Delhi) from Agra. It was completed in 1648 and originally called the citadel 'Qila-i-Mubarak ", which means" blessed fortress ", but as the fort there were new buildings, there was a new name.

Lal Qila, is a large complex of buildings, which houses the family of the ruler, and about three thousand of courtiers and nobles. Built of red sandstone, this architectural monument is a characteristic bright brick-red color, which gave the new name of the fortress. It was built in the Muslim style, it has a shape of an irregular octagon, and the height of its walls varies from 16 to 33 meters. Interior decoration fortress buildings are fully compatible with the imperial status of their inhabitants. Carved pillars of incredible beauty, the walls of rooms, decorated with delicate ornaments and mosaics made of marble, neat dome and wrought-iron openwork lattice made Red Fort, a unique monument of Mughal architecture.

As already mentioned, the Red Fort is a system of several parts, the most significant of which were the yard Diwan-i-Aam and the hall Diwan-i-Khas, where the emperor received visitors, private apartments ruler Nahr-i-Beheshti, women's quarters (Xena Mumtaz Mahal and Rang Mahal), a luxurious garden Hayat Bakhsh Bagh and the famous Pearl Mosque Moti entirely made of pure white marble.

Today in the fortress are several museums.

Red Fort is still a significant place for the people of India, and not only because of the enormous tourist flow, but also because each year on 15 August Independence Day that is where the Prime Minister of India, read his address to the nation.