• Free first Sunday of every month, when entry costs nothing for the whole family
• Last entry at 4:15pm, 45 minutes before closing, so aim for a morning or early-afternoon visit
• Easiest by car, via the IC19 and A16 toward Pêro Pinheiro, following the signs for Base Aérea Nº1 and Museu do Ar

The Portuguese Air Force's aviation museum fills the old hangars at the Granja do Marquês air base near Sintra. The main hangar lines up 42 aircraft in date order, from early biplanes to jet fighters. Three hangars from the 1920s hold small civil planes, a multimedia auditorium, aircraft flown in the Portuguese Colonial War, and early jet trainers.