The City of Copenhagen has invested over $175,000 to provide 1,300 free bicycles for visitors and Copenhageners.
All you have to do is to find one of the 125 City Bike Parking places dotted about in the centre of the city, deposit a DKK 20 coin (about $3) and ride off - on your bike, Copenhagen style.
When the cycle is returned to any rack you get your DKK 20 back.
Note that the use of the free city bikes is limited to central Copenhagen and only between 1 May and 15 December.