This was emperor Shah Jahan's residence, a fort of unimaginable magnitude. Built in 1648 along the banks of the Yamuna river, it is constructed in the reddest of sandstones, and extends up to two kilometers horizontally. Before 1857, the fort was a small city in itself and was home to over 3000 people. Today, it daily welcomes thousands of tourists. Only a part of the full area is accessible to public, the rest is the territory of the Indian army. The daily sound and light show in the evenings is very popular with the visitors and is a must-see.