Amritsar is one of the largest cities of the Punjab state in India. The city origin lays in the village of Tung, and was named after the lake founded by the fourth Sikh Guru Ram Das in 1574 on land bought by him for 700 rupees from the owners of the village of Tung. Earlier Guru Ram Das had begun building Santokhsar Sarovar, near the village of Sultanwind in 1564 (according to one source in 1570). It could not be completed before 1588. In 1574, Guru Ram Das built his residence and moved to this place. At that time, it was known as Guru Da Chakk. (Later, it came to be known as Chakk Ram Das.)
Amritsar is dominated by the history of Sikhs and many of their sacred shrines are found in and around the city. Amritsar's central walled city has narrow streets mostly developed in the 17th and 18th century. The city is a peculiar example of an introverted planning system with unique areas called Katras. The Katras are self styled residential units that provided unique defence system during attacks on the city.
The city lies on the main Grand Trunk Road (GT Road) from Delhi to Amritsar connecting to Lahore in Pakistan. The G. T. Road, built by Sher Shah Suri, runs through the whole of the northern half of the Indian subcontinent, connecting Peshawar, Pakistan to Sonargaon, Bangladesh. The city is also connected to most other major cities such as New Delhi, Mumbai, Calcutta by an extensive network of rail system. The city also provides air connectivity to major Indian cities, as well as international cities such as Birmingham, Toronto, Dubai, Singapore, Tashkent, Ashgabat, London etc. from the Raja Sansi International Airport, recently renamed as Guru Ramdas International Airport. The airport is being developed for increasing demand in future; a new International inbound and outbound terminal is operational, and a cargo terminal is under construction. The city is the administrative center for the Amritsar District. However, it did not become the industrial
