The state of Punjab is renowned for its cuisine, culture and history. Punjab has a vast public transportation and communication network. Some of the main cities in Punjab are Amritsar, Jalandhar, Patiala, Pathankot and Ludhiana. Patiala is known for its historical forts. Punjab also has a rich Sikh religious history.Punjab receives many religious tourists, as the state is home to some of the holiest places in Sikhism, including the Harmandir Sahib and three of the five Panj Takht.