Jammu also known informally as Duggardesh, is one of the three administrative divisions within Jammu and Kashmir, the northernmost state in India. The region is not a state per se but a part of the state of Jammu & Kashmir. It consists of the districts of Doda, Kathua, Jammu, Udhampur, Rajouri, Ramban, Reasi, Samba, Kishtwar & Poonch. Most of the land is hilly or mountainous, including the Pir Panjal range which separates it from the Kashmir Valley and part of the Great Himalayas in the eastern districts of Doda and Kishtwar. The principal river is the Chenab. Jammu city, officially called Jammu-Tawi, is the largest city in Jammu and the winter capital of Jammu and Kashmir. Jammu City is also known as "City of Temples" as it has many temples and shrines, with glittering shikhars soaring into the sky, which dot the city’s skyline, creating the ambiance of a holy and peaceful Hindu city. Home to some of the most popular Hindu shrines, such as Vaishno Devi, Jammu is a pilgrimage tourism destination in India. The majority of Jammu's 5.9 million population practices Hinduism, while Islam and Sikhism enjoy a strong cultural heritage in the region. Due to relatively better infrastructure, Jammu has emerged as the main economic center of the state