Called “America’s most colorful caverns” for the iron and manganese that stain its formations red and blue, this is the largest show cave in Ohio, a constant 54 degrees, with the famous five-foot double-ended “Crystal King” stalactite. There are two tours: the Historic one starts at the site of discovery and covers what was explored between 1897 and 1925, and the Natural Wonder is a mile-long walk through everything found after that. PUBLIC, guided, open all year.
Other places on the map within a couple of hours.
