Here’s a picture of the historical Gurudwara Sis Ganj Sahib, which you must have seen while in Chandni Chowk. Although the current structure came up only in 1930, the site commemorates the spot where the 9th Sikh Guru – Tegh Bahadur – was beheaded on the orders of Mughal Emperor Aurangzeb in 1675.
In 1735, Sikh military leader Baghel Singh marched against the later Mughal king Shah Alam II and forced a settlement with him to build gurudwaras in important historical sites across the city, one of which was Sis Ganj. This shrine still houses the tree trunk under which the guru was beheaded, and attracts thousands of devotees.
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