The Climate Card (기후동행카드) is Seoul’s new unlimited-use public transport pass for subway, bus, and bike (optional). Available as a 1, 2, 3, 5-day tourist pass or a 30-day pass, it covers most Seoul metro lines (Lines 1–9, Ui, Sillim, parts of Gyeongui–Jungang, Suin-Bundang, Gyeongchun, AREX between Gimpo & Seoul) and Seoul-licensed buses.