The Red Fort is a 17th century fort complex constructed by the Mughal emperor Shah Jahan in the walled city of Old Delhi that served as the residence of the Imperial Family of India. It also served as the capital of the Mughals until 1857, when Mughal emperor Bahadur Shah Zafar was exiled by the British Indian government. It was designated a UNESCO World Heritage Site in 2007.

Mughal Emperor Shah Jahan, started construction of the massive fort in 1638 and work was completed in 1648 (10 years).  The Red Fort was originally referred to as "Qila-i-Mubarak" (the blessed fort) because it was the residence of the royal family. The layout of the Red Fort was organised to retain and integrate this site with the Salimgarh Fort.  The fort used to lie along the Yamuna River, which fed the moats that surround most of the wall. The wall at its north-eastern corner is adjacent to an older fort, the Salimgarh Fort, a defence built by Islam Shah Suri in 1546.