Space Mountain is a space-themed indoor steel roller coaster in Tomorrowland at Hong Kong Disneyland in Hong Kong, China. Opened on the same day Hong Kong Disneyland opened, it was the next roller coaster built at Hong Kong Disneyland and was the fifth of the five versions of Space Mountain built by The Walt Disney Company. Its exterior façade is one of Hong Kong Disneyland's four "mountain" structures that serve as park landmarks.