The founder of the Sikh religion, Guru Nanak, was born near Lahore. He took elements from Hinduism and Islam and combined them with new ideas. They controlled an empire centered on Punjab, with Lahore as their temporal capital and nearby Amritsar (in India) as their religious capital.
At partition, all the Sikhs migrated to India where they are now asking for a separate Sikh state in the Indian part of Punjab. Their shrines in Pakistan are maintained by the government and are visited at festival times by Sikh pilgrims.