Cycling culture refers to cities and countries which support a large percentage of utility cycling. Examples include the Netherlands, Denmark, Germany, Belgium (Flanders in particular), Sweden, Italy, China, Bangladesh and Japan. There are also towns in some countries where bicycle culture has been an integral part of the landscape for generations, even without much official support. That is the case of Ílhavo, in Portugal. North American cities with strong bicycle cultures include Madison, Portland, San Francisco, Boston, Toronto, Montreal, Lincoln, Peoria, and the Twin Cities.