Bicyclists are everywhere in Copenhagen, and they are very skilled at maneuvering in traffic. Here, two young lovers hold hands as they speed down the street.

One of the first things my husband and I noticed in Copenhagen was that it’s a city on two wheels. The city is flat, has many bike lanes, a lot of narrow streets, limited parking in the city and everything costs a lot — at least for Americans. So bikes make a lot of economic sense. Almost 40 percent of the city’s inhabitants commute on bicycles.

A crowd of bicyclists peddle rapidly at rush hour on H.C. Andersens Boulevard at the Town Hall Square in Copenhagen, Denmark.

Almost everyone on the bikes looked fit and attractive. It was like being a Ralph Lauren ad without the pretentiousness. Copenhagen is considered the most bike-friendly city in the world. More people commute on bicycle in Copenhagen…