This is not a randomly boring walk amongst oil tanks. Oh no, the Oil Tank Park was at one time, for over 41 years, a secret oil reserve base home to 5 huge oil tanks, which held enough fuel to keep Seoul powered for an entire month! If the need ever arose. Today the place is open to the public. Explore the complex with its converted oil tanks and cultural displays. Easy to reach from your hotel in Seoul. The park is within walking distance of World Cup Stadium Station and Haneul Park.