Lahore Gate Entry to Red Fort, New Delhi

The Red Fort (Hindi: लाल क़िला, Urdu: لال قلعہ, usually transcribed into English as Lal Qil'ah or Lal Qila) is a 17th century fort complex constructed by the Mughal emperor Shah Jahan in the walled city of Old Delhi (in present day Delhi, India) that served as the residence of the Mughal Emperors. 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. It covers a total area of about 254.67 acres.

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 fortress palace was an important focal point of the medieval city of Shahjahanabad. The planning and aesthetics of the Red Fort represent the zenith of Mughal creativity which prevailed during the reign of Emperor Shah Jahan. This Fort has had many developments added on after its construction by Emperor Shahjahan. The significant phases of development were under Aurangzeb and later Mughal rulers. Important physical changes were carried out in the overall settings of the site after the Indian Mutiny in 1857. After Independence, the site experienced a few changes in terms of addition/alteration to the structures. During the British period the Fort was mainly used as a cantonment and even after Independence, a significant part of the Fort remained under the control of the Indian Army until the year 2003. The Red Fort is an attraction for tourists from around the world.