While many would imagine Bihar to be a strong Hindu land, there is a major chunk of Sikh population and influence of Sikhism in the city. For instance, the Patna Sahib Gurdwara is located in one of the oldest quarters of Patna. It is regarded to be one of the sacred of the 5 takths or seats of authority for Sikhs. Guru Nanak, known as the first guru of the Sikhs has visited this city as well. This place is called as Harminder Takth, although the Sikhs call it as Patna Sahib respectfully.
There is an interesting history behind Patna Sahib. As per legends, a sincere devotee of Guru Nanak, Salis Rai Johri was greatly inspired by the preachings of Sikh Gurus. He converted his lavish mansion into a Dharmashala where Guru Tegh Bahadur is known to have stayed.
In the year 1839, the Gurdwara was reconstructed after a fire that destroyed the construction. In 1934 again, some part of Patna Sahib was destroyed while a powerful earthquake affected the state of Bihar. It was rebuilt in the year 1954.
Today, there is a small museum in the Gurdwara within its premises that houses some relics of Sikh Gurus, which include hard written orders called Hukumnamas of Guru Gobind Singh as well as Guru Teg Bahadur.