Heathrow Airport is the largest of the UK capital’s many airports and lies on the west side of the city. With more than 70 million passengers annually, it is the busiest passenger airport in Europe and the third busiest in the world, although welcomes more international passengers than any other airport. Heathrow started as a small airfield in 1929 before being developed in 1944. The airport takes its name from the hamlet of Heathrow which was demolished to make way for the airports expansion. The airport consist of five passenger terminals and one dedicated cargo terminal. The airport has two runways, with plans in place to add a third by 2025. The airport services 180 destinations in 85 countries – the five most popular international destinations for passengers travelling from Heathrow are, in order: New York (USA), Dublin (Ireland), Paris (France), Amsterdam (Netherlands) and Frankfurt (Germany).