Red Fort (Lal Qila) : The sandstone walls of the Red Fort (Rs 11, Monday closed) extend for 2 km and vary in height from 18 m on the river side to 33 m on the city side. Shah Jahan began construction of the massive fort in 1638 and it was completed in 1648. Shah Jahan never completely moved his capital from Agra to his new city of Shahjahanabad in Delhi because he was deposed and imprisoned in Agra fort by his son Aurangazeb.
The Red Fort dates from the very peak of Mughal power. The Mughal reign from Delhi was a short one, however, Aurangazeb was the first and last great Mughal emperor to rule from here.
The Yamuna river used to flow right by the eastern edge of the fort, and once filled the 10 m deep moat. Tickets are available at Lahore Gate entrance.