The most popular attraction, which is the snail apartment, made of used cement pipes and steel. Asolar power system installed in the apartment not only ensures self-sufficiency in power but also supplies power for other tourist attractions.

"As a coal-rich city, there are lots of unused large machines after some mines were closed in recent years," said Zhang Zhuo, Party chief of the academy. "We have collected thousands of metric tons of machines that are made of steel. We changed them into unique landscapes, hoping to record the city's industrial history."