The Lahore Fort is one of the most prestigious constructions of its sort in the world. It has 21 significant monuments, some of which date back to the reign of Emperor Akbar. There are about 21 distinct buildings in the fort. These in the northern part are divided into four blocks or quadrangles. Lahore Fort is Pakistan's unique monument that depicts the whole history of Mughal architecture and the eras that followed. UNESCO inscribed the Lahore Fort as a World Heritage Site in 1981.