Final answer:
Patna Saheb is significant because it is the birthplace of Guru Gobind Singh Ji, the tenth Sikh Guru, making it one of the five Takhts in Sikhism.
Step-by-step explanation:
The significance of Patna Saheb, one of the five Takhts or seats of authority in Sikhism, is that it is the birthplace of Guru Gobind Singh Ji, who was the tenth Sikh Guru. This holy site is one of the most important pilgrimage destinations for Sikhs around the globe. Located in the city of Patna, Bihar, India, Takht Sri Patna Sahib holds a very important place in Sikh history and tradition, as it commemorates the sacred place where Guru Gobind Singh Ji, the last of the ten Sikh Gurus, was born in 1666.