Copenhagen Airport is located within Kastrup, about 4 km from the downtown area. This is the largest airport in both Denmark and the Nordic countries. Enterprise Rent-A-Car can be found at the airport, with advanced bookings available. Kastrup is also served by Tårnby station on the Øresund Line, which connects Copenhagen Airport to Copenhagen Central Station. A major European freeway also goes through Kastrup, making car rental in Kastrup convenient for travel in Denmark.