Seoul Capital Area
Along with Gangwon, Chungnam is the only province outside the Seoul Capital Area to be served by the Seoul Metropolitan Subway, with Seoul Subway Line 1 passing Cheonan and Asan. Multimillion-dollar projects are being developed, such as New Asan City centered on the newly built Cheonan-Asan Station that connects Chungnam's largest city, Cheonan, to Seoul Station in less than 30 minutes via the KTX bullet train.