Jeju Glass Castle (제주 유리의성)

Jeju Glass Castle, like its name suggests, is a theme park made entirely by shaped glass: you can explore the world’s very first all-glass labyrinth, see the world’s largest glass ball and even walk on a glass bridge. 

There is also an indoor part, with a museum where you can learn more about the art of glass-shaping, make some vase, plate or candle for yourself and admire beautiful glass-work made by internationally famous artists from all over the world. 

Another strange experience to try: the outdoor toilets of Jeju Glass Castle are also made of glass, but while you can see everyone outside of it, people can’t see you inside.