Rawalpindi, commonly known as Pindi, is a city in Punjab, Pakistan. It is the fourth-largest city in Pakistan by population, while the larger Islamabad Rawalpindi metropolitan area is the country's third-largest area. The economy of Rawalpindi is interlinked with Islamabad, and the two are jointly known as the "twin cities". The city is the administrative seat of the Rawalpindi District.Rawalpindi is located on the Pothohar Plateau, which is known for the existence of a Buddhist community, particularly in neighbouring town of Taxila, which is a UNESCO World Heritage Site. The city was destroyed during the invasion of Mahmud of Ghazni before being taken over by Gakhars who went on to name the city as "Rawalpind" in 1493. In 1765, the Gakhars were defeated as Rawalpindi became part of the Sikh Empire. The city became part of the British Raj in 1849 and in 1851 became the largest garrison town for the British Indian Army. After the partition of India in 1947, the city became home to the headquarters of Pakistan Army hence retaining its status as a major military city.