Helsinki Metro

(Image source: http://blog.visithelsinki.fi)

The subway travels between Vuosaari, Helsinki and Ruoholahti. It takes 23 minutes for you to travel from Ruoholahti to Vuosaari or Mellunmäki. The western part of the subway began serving the public in 2017, and it even reaches Kivenlahti. It takes 40 minutes or so to cover the whole distance.