1 Best Sight in Side Trips from Busan, South Korea

This former amethyst mine has been turned into a tourist attraction that's worth a visit if caves are your thing. The 2.5-km-long (1.55 miles) cavern can be accessed on foot and offers views to amethysts, rotating exhibitions, as well as subterranean boat rides. There are a few older carnival rides outside in case the cave itself wasn't thrilling enough for you.