Incredible Europe map shows which countries have the most castles - there's a clear winner Rival factions have sought to establish their dominance on the continent for centuries.

Iceland regularly comes up on lists of the most expensive countries in Europe – with the Scandinavian nation, which has a population of around 400,000 people, importing a lot of its goods.

NATO and the European Union have 22 member countries in common and the two are partners, meaning the EU can access NATO's planning capabilities for its own military operations, according to NATO.