Barajas Airport, Madrid

With an annual volume of 50 million passengers (2010) and a maximum capacity of 70 million, Barajas Airport in Madrid is the second largest airport in Europe and the 12th largest in the world. The expansion of Terminal 4 in 2006 brought 65 new gates and tripled the terminal area. The airport employs around 30,000 people

Peking Airport

The world's largest building in terms of space, with 1.3 million square meters, opened for the 2008 Olympic Games. In terms of capacity, this airport is the largest in Asia and the second largest in the world accommodating more than 73 million passengers a year. At night, the impressive building, which is located 29 km from Beijing's city center, is illuminated in the Chinese national colors.