At which fort did Guru Gobind Singh found the Khalsa Panth?

Q. At which fort did Guru Gobind Singh found the Khalsa Panth?
Answer: Anandpur Sahib Fort
Notes: Guru Gobind Singh resided at Anandpur Sahib Fort for 16 years. In 1699, he founded the Khalsa Panth here. Anandpur Sahib is also renowned for the Virasat-e-Khalsa museum, showcasing Sikh and Punjab history, and the Shri Guru Teg Bahadur Museum, commemorating Guru Teg Bahadur's martyrdom.