Gurdwara eat free vegetarian food brought in by Sikhs worshiping at the "gurdwara". They may also have a library, nursery, classroom, meeting rooms, a gift shop, and finally a repair shop. A "gurdwara" can be identified from a distance by tall flagpoles bearing the "Nishan Sahib", the Sikh flag. The most well-known "gurdwara" is the Harmandir Sahib (popularly known as The Golden Temple) in Amritsar, Punjab, India, which is the center of power (Akal Takht) of Sikhism. The first "gurdwara" was built in Kartarpur, on the banks of Ravi River in the Punjab region by the first Sikh guru, Guru Nanak
Sikhism charge of upkeep of the historical gurdwaras of Punjab, adopted Nanakshahi calendar. The new calendar is highly controversial among Sikhs and is not universally accepted. Sikh festivals include the following: Khalsa Sikhs have also supported and helped develop major pilgrimage traditions to sacred sites such as Harmandir Sahib, Anandpur Sahib, Fatehgarh Sahib, Patna Sahib, Hazur Nanded Sahib, Hemkund Sahib and others. Sikh pilgrims and Sikhs of other sects customarily consider these as holy and a part of their "Tirath". The Hola Mohalla around the festival of Holi, for example, is a ceremonial and customary gathering every year in Anandpur Sahib