Agra Fort, is a monument, (Hindi: आगरा का किला, Urdu: آگرہ قلعہ) is a UNESCO World Heritage site located in Agra, Uttar Pradesh, India. It is about 2.5 km northwest of its more famous sister monument, the Taj Mahal. The fort can be more accurately described as a walled city. After Panipat, Mughals captured the fort and a vast treasure - which included a diamond that was later named as the Koh-i-Noordiamond - was seized. Babur stayed in the fort in the palace of Ibrahim. He built a baoli (step well) in it. Humayun was crowned here in 1530. Humayun was defeated in Bilgram in 1540. Sher Shah held the fort for five years. The Mughals defeated the Hindu King Hemufinally at the Second Battle of Panipat in 1556.
Realizing the importance of its central situation, Akbar made it his capital and arrived in Agra in 1558. His historian, Abdul Fazal, recorded that this was a brick fort known as 'Badalgarh' . It was in a ruined condition and Akbar had it rebuilt with red sandstone from Barauli area in Rajasthan. Architects laid the foundation and it was built with bricks in the inner core with sandstone on external surfaces. Builders worked on it for eight years, completing it in 1573.
It was only during the reign of Akbar's grandson, Shah Jahan, that the site took on its current state. The legend is that Shah Jahan built the beautiful Taj Mahal for his wife, Mumtaz Mahal. Unlike his grandfather, Shah Jahan tended to have buildings made from white marble, often inlaid with gold or semi-precious gems. He destroyed some of the earlier buildings inside the fort in order to make his own.
At the end of his life, Shah Jahan was imprisoned by his son, Aurangzeb, in the fort. It is rumored that Shah Jahan died in Musamman Burj, a tower with a marble balcony with a view of the Taj Mahal.
The fort was the site of a battle during the Indian rebellion of 1857, which caused the end of the British East India Company's rule in India, and led to a century of direct rule of India by Britain. en.wikipedia.org/wiki/agra_fort
