The breathtaking landscape, rich wildlife, and the colorful cultural heritage of Bhutan make it a favorite tourist destination. Tourism is, however, restricted and tourists are encouraged to go for guided and package tours. The fact that the transport system is not well developed also acts as a hindrance. The prime points of entry into Bhutan are through Paro and Phuentsholing. Eastern Bhutan, known for its breathtaking natural beauty, offers the travelers a taste of Bhutanese cultural life though its numerous festivals and rituals. In western Bhutan, tourists can visit fortress, temples, and museums such as the Folk Heritage museum in Thimphu. Bhutan is an ornithological paradise and a favorite destination for bird watchers. Mountaineers head to Bhutan to enjoy trekking and rock climbing in the mountainous country. Paragliding, kayaking, and rafting in Bhutanese rivers such Wang Chhu, Sunkosh, Puna Tsang Chhu are other activities on offer.