Lhasa, the capital of Tibet Autonomous Region, has a history of more than 1,300 years. It enjoys 3,000 hours of sunlight annually, much more than all other cities in this regard, giving the city its title of "sunlit city." Lhasa itself is a rich museum featuring ancient ruins, ancient architecture, ancient monasteries, ancient stone tablets and ancient gardens. The city boasts over 100 scenic spots altogether. The Potala Palace and Jokhang Monastery have been listed by UNESCO as world heritage site.