Brooklyn The Burger Joint Olympic Park is in Bangi-dong near Olympic Park in Seoul and serves American-style handmade burgers and fries. Burgers can be ordered with the patty cooked medium, and they come with original french fries or sweet potato fries. On weekends at mealtimes and at lunch, you have to put your name on a wait list, and food takes time to come out after you order. The cheese and the burgers are on the salty side.