With Assembly elections in Punjab round the corner, Singh accompanied by party in-charge for Punjab Asha Kumari, Congress leader Shakeel Ahmad Khan and state minister Ashok Choudhary, reached Takht Harmandir Sahib connected with the 10th Guru Govind Singh and paid obeisance.
He later arrived at the tent city at Gandhi Maidan and mingled with devotees who have thronged the place from across the world.
Talking to reporters, Singh praised Chief Minister Nitish Kumar for the arrangements for celebration of the 350th 'Prakash Parva' on the birth anniversary of Guru Govind Singh, the tenth Sikh Guru.
"Such congregations are organised in Punjab also by the Akalis, but I have never seen a wonderful and elaborate arrangement like in Patna," he told reporters.
The Punjab Congress chief later visited the residence of Nitish Kumar and complimented him for taking personal interest in making elaborate arrangements for the Parva.