Hongshan Shuiku

Centered around a geological formation known as the Guanling Formation, which is notable for its Triassic fossils. A number of these fossils are displayed at an on-site museum. The museum includes three excavation pits where you can see fossils in situ. There is even a site where visitors are permitted to dig for fossils on their own (though whether you would be allowed to keep them and take them out of the country is another matter).