The 45 caves in Yungang Grottoes include some 254 niches with about 51,000 statues. Yugang Grottoes constitute a classical masterpiece of the first peak of Chinese Buddhist art. In December 2001, Yungang Grottoes was included as a World Heritage Site by UNESCO. The expansion project in 2010 made Yungang Grottoes a world famous tourist sightseeing destination with its combination of a royal ancient Buddhist cave temple, royal garden and the complex of ancient architecture. Yungang Grottoes, with their complexity, their rich variety and vigorous features constitute a classical masterpiece as one of the three most famous Buddhist cave temples in China. The Yungang cave art represents the successful fusion of Buddhist religions symbolic art from the Buddhist Art of Gandhara (a style of Buddhist visual art that developed in what is now northwestern Pakistan and eastern Afghanistan between 1st century BC and the 7th century CE.)