3-6 hours. It takes about 3-6 hours to visit Longmen Grottoes in Luoyang. There are many niches and pagodas in Longmen Grottoes. However, there are many tour buses in the scenic spots. If you take a tour bus, you can visit the scenic spots in about three hours. After shopping, if you walk, it will take 5-6 hours to complete the shopping. Longmen Grottoes is located in Luoyang City, Henan Province. It is a national 5a tourist attraction and ranks first among the major grottoes in China. The opening hours are 8:00-18:00 and the ticket price is 90 yuan.