Adolfo Suárez Madrid–Barajas Airport — Madrid, Spain

Adolfo Suárez Madrid–Barajas Airport, coded MAD, honors Spain's first democratically elected prime minister after the Franco era, a renaming carried out in 2014 to recognize his role in guiding the country's transition to democracy. The airport ranks among the largest in Europe, anchored by the striking Terminal 4 designed by Richard Rogers and Estudio Lamela, its undulating bamboo-lined roof and shafts of colored light making it one of the more architecturally celebrated terminals anywhere in the world. MAD serves as the principal hub for Iberia and the oneworld alliance, and its geographic position makes it a critical bridge between Europe and Latin America, carrying more transatlantic traffic to South America than almost any other European airport. Four runways allow for high capacity operations even during Madrid's busiest travel periods. The Barajas district that gives the airport its historic name lies on the northeastern edge of the Spanish capital, well connected to the city center by metro and highway.