Beautiful airport ... love the architecture ! We were here sometime April 2019.
From wikipedia :
Adolfo Suárez Madrid–Barajas Airport (Spanish: Aeropuerto Adolfo Suárez Madrid-Barajas (IATA: MAD, ICAO: LEMD), commonly known as Madrid–Barajas Airport, is the main international airport serving Madrid in Spain. At 3,050 ha (7,500 acres) in area, it is the second largest airport in Europe by physical size behind Paris–Charles de Gaulle Airport. In 2018, 57.9 million passengers used Madrid–Barajas, making it the country's busiest airport as well as Europe's sixth busiest...