Browse tips on how to travel as eco-friendly as you can - from swapping the plane for the train, to getting involved with a community project. Add your own green suggestions to the list or email been.there@guardian.co.uk and we'll put them up for you.
Cycling around Copenhagen is free… and a great way to explore the city! Simply put a 20 kroner coin in one of the many bike racks scattered around and enjoy. When you return the bike, you get your deposit back.