Lahore (//) is the capital city of the province of Punjab, the second largest metropolitan area in Pakistan and the 18th most populous city in the world. It is an important historical centre in South Asia. With a rich history dating back over a millennium, Lahore is a main cultural centre of the Punjab region and Pakistan, and is the largest Punjabi city in the world. Lahore remains an economic, political, transportation, entertainment, and educational hub of Pakistan.
Lahore served as the regional capital of the empires of the Hindu Shahi kingdom in the 11th century, the Ghaznavids in the 12th century, the Ghurid State in the 12th and 13th centuries and the Mughal Empire in the 16th century. From 1802 to 1849, Lahore served as the capital city of the Sikh Empire. In the mid-19th and early 20th century, Lahore was the capital of the Punjab region under the British Raj. The traditional capital of Punjab for a millennium, Lahore was the cultural centre of the northern Indian subcontinent which extends from the eastern banks of the Indus River to New Delhi. Mughal structures such as the Badshahi Mosque, the Lahore Fort, Shalimar Gardens, the mausolea of Jehangir and Nur Jahan are some of the major tourist attractions in the city. Lahore is also home to many British colonial structures built in the Indo-Saracenic style, such as the General Post Office, Lahore Museum and many older universities and colleges.
Lahore is referred to as the cultural heart of Pakistan as it hosts most of the arts, cuisine, festivals, music, film-making, gardening and intelligentsia of the country. The city has always been a centre for publications where 80% of Pakistan's books are published, and it remains the foremost centre of literary, educational and cultural activity in Pakistan. It is also home to hundreds of temples, mosques, churches and shrines.
According to the latest 1998 census, Lahore's population was 6,319,000. In July 2014, Index Mundi put the population of the city at 7,566,000. An estimate in January 2015 gave the population of the Lahore agglomeration as 10,052,000. It is ranked 34 in the most populated urban areas in the world and the 8th largest city within the Organisation of Islamic Cooperation. The area of Lahore has almost doubled in the last 12 to 14 years, nevertheless any population estimate should be taken with a grain of salt as the census has been missing in action, one is scheduled for 2016. In 2010, Lahore was ranked as a Gamma+ world city. The Guardian has rated Lahore as the 2nd best tourist destination in Pakistan after Taxila.