The Copenhagen Metro is the rapid public transport system in Denmarks capital. The first line opned in 2002, It now has 4 lines, M1, M2, M3 and M4. M5 is planned. I operates 44 stations, 30 are underground. M2 is the line from Copenhagen Airport to city center. The M3 line Circle Line, connects the neighborhoods of Vesterbro, Frederiksberg, Nørrebro, Østerbro and the city center. The most recent line, M4, supplements the M3 line and connects it to Nordhavn and Sydhavn, as well as Valby via Copenhagen South. The fifth line, M5, is currently in the planning stages and will serve Refshaleøen with Reffen as well as the under-construction Lynetteholmen neighbourhood, with an expected opening date in 2035. You can use the App Rejsekort or buy tickets at the stations. What to see next: