A trip to Samcheok on Korea's east coast isn't complete without a visit to one of its best tourist destinations: Hwanseon Cave. I'd never been in a large cave before, so I was seriously excited to check out one that boasted being not only the "largest limestone cave in Korea," but also one of the largest in all of Asia. I recently took a weekend trip with some friends who were visiting from the U.S. and the cave was just as awe-inspiring as we were hoping.