The Goblin Market is Seoul’s first flea market; it's been in operation since around the end of the war. The market is huge, with more than 500 booths. Some stalls sell new stuff, while others’ merchandise seems to be the result of attic cleaning. Watch for war souvenirs, watch for watches, watch for what a country saves. A must for the adventurous and serious shopper, it’s by the Cheonggyecheon Stream, and also goes by the name Hwanghak Dong Flea Market or Dokkaebi Market.