In which city could you travel on the underground from Olympic Park to World Cup Stadium?
Soul Special City Hanseong Seoul-T'ukpyolshi Seul Soul Special City, South Korea Gyeongseong Municipality of Seoul 서울시 Hansong Seoulite Seoul castle Seulum Seoul Seoul-teukbyeolsi Seeoul 漢城 Soul-t'ukpyolsi Sangwon Middle School (Seoul) Sŏul Special City, South Korea Seoul Municipality Soul Tukpyolsi Kyungsung Buildings and structures in Seoul Seoul Teugbyeolsi South Seoul Capital of South Korea Soul Teukbyeolsi UN/LOCODE:KRSEL Seoul Autonomous City 서울특별시 Sŏul Special City Soul of Asia Economy of Seoul Hanayng Seoul. Seoul castle town Seoul Teukbyeolsi City of Seoul Five Grand Palaces Hwangseong Seulensis Seoul Central City Soul, South Korea Capitals of South Korea North Seoul Seoul City Shou'er Hanyang (Korea) SEOUL Special City of Seoul Shouer Hansung Autonomous City of Seoul Soeul Sŏul 서울 Five Grand Palaces of Joseon-Dynasty Seoul Seoul, Republic of Korea 首爾 Seoul, South Korea Seoul, the Republic of Korea Seoul, Korea