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The Helsinki University of Technology ( HUT ) is actually located in Otaniemi , a region of Espoo , so the needed ticket is the regional kind. During night time 2am-4.30am a higher night rate is charged. For two (adult) people (and several children), who are traveling together at least two trips within 24 hours, a group ticket ('kimppalippu': regional €, and 9€ for Helsinki or Espoo) is ideal.