Town twinning is a concept whereby towns or cities from different geographical areas and matching policies for fostering human contact and cultural links. Usually, but not always, the twin cities often have similar features. The idea of town twinning in Europe emerged shortly after the Second World War, with the aim of contributing to the European population older bonds of unity and promote mutually beneficial projects. Although the concept is much more popular in the European region than in other parts of the world today has spread to every continent.
Today, the European Union supports projects town twinning. Official support was formally established in 1989. In 2003 a budget of around 12 million per year to fund 1,300 twinning projects planned. By executing town twinning common conflicts are overcome forces for conducting numerous projects are unified and especially the independent customization of each city or town is encouraged.
There are many cities in response to various reasons decide to make a partnership with other villas, decide to maintain close ties of solidarity. Currently there are many institutions that are aimed to promote town twinning, looking at this fact reduced the risks of war and especially the development of cultural ties.
Calafell is currently twinned with the towns of Larmor-Plage (France) and Vielha e Mijaran (Spain).