The Crystal Cave in Springfield, Missouri is a natural cave wherein the only man made parts are paths and lighting. The cave first opened its doors to the public in 1893, seven years after the opening of the Mark Twain Cave. This makes it the second cave to open in the entire state.

The Crystal Cave may not be among the largest caves in Missouri, but it has more than enough charms to impress visitors. In the cave, there is a Washington Monument formation consisting of two giant stalagmites. Found in the Cathedral Chamber, these are big vertical columns broken in two by a certain prehistoric seismic event. The cave also features an upside down well that extends up to 12 feet going up toward the roof. Other features to look out for are the rainbow falls, the Cathedral, fossil crinoids, the castle and certain Indian symbols.