Bahawalpur (/bəha:wəlpʌr/; Punjabi, Urdu: , romanized: Bahāwalpūr; bəɦɑːʋəlpuːɾ) is a city in the Punjab province of Pakistan. It is the 11th most populous city of Pakistan and 6th most populous city of Punjab. Bahawalpur is the capital of Bahawalpur Division and is an important cultural and economical city of South Punjab alongwith Multan. Founded in 1748, Bahawalpur was the capital of the former princely state of Bahawalpur, ruled by the Abbasi family of Nawabs until 1955. The Nawabs left a rich architectural legacy, and Bahawalpur is now known for its monuments dating from that period. The city lies at the edge of the Cholistan Desert, and serves as the gateway to the nearby Lal Suhanra National Park. Bahawalpur (princely state)Bahawalpur was among the 584 princely states before the Partition of India. Bahawalpur State was home to various ancient societies. The Bahawalpur region was part of Multan province of Mughal Empire in recent history. It contains ruins from the Indus Valley civilisation, as well as ancient Buddhist sites such as the nearby Patan minara. British archaeologist Sir Alexander Cunningham identified the Bahawalpur region as home of the Yaudheya kingdoms of the Mahābhārata. Prior to the establishment of Bahawalpur, Cholistan region's major city was the city of Uch Sharif – a regional metropolitan centre between the 12th and 17th centuries that is renowned for its collection of historic shrines dedicated to Muslim mystics from the 12–15th centuries built in the region's vernacular style. Bahawalpur was established in 1748 by Nawab Bahawal Khan I, after he migrated to the region around Uch from Shikarpur, Sindh. Bahawalpur replaced Derawar as the clan's capital city. The city initially flourished as a trading post on trade routes between Afghanistan and central India. In 1785, the Durrani commander Sirdar Khan attacked Bahawalpur city and destroyed many of its buildings on behalf of Mian Abdul Nabi Kalhora of Sindh. Bahawalpur's ruling family, along with nobles from nearby Uch, were forced to take refuge in the Derawar Fort, where they successfully repulsed further attacks.