Agra Fort,

It is known as the Red Fort, has a rich history that includes battles, renovations, and the rule of multiple dynasties.
Construction
The fort was originally built in the 11th century
Mughal emperor Akbar renovated the fort from 1565 and completed it in 1573
Mughal emperor Shah Jahan made the fort a marble palace in the 17th century
Mughal emperor Aurangzeb expanded the fort and created a secret tunnel
Battles
The fort was the site of a battle during the Indian rebellion of 1857
The fort was part of many wars and battles
Occupations
The fort was owned by the Marathas after Aurangzeb’s death
The fort came into the British’s possession
After independence, the Indian army used part of the fort
Notable features
The fort includes the Pearl Mosque (Moti Masjid), the Hall of Private Audience (Diwan-i-Khas), and the Octagonal Tower (Musamman Burj)
The fort also includes the Palace of Mirrors (Sheesh Mahal), which is decorated with thousands of small mirrors
The fort includes the tomb of John Russell Colvin, the British governor of the region