The cathedral and the Viking Ship Museum, which contains the well-preserved remains of five 11th-century ships, attract more than 100,000 visitors annually. In addition to its internationally recognized tourist attractions and its annual rock festival, Roskilde is popular with shoppers thanks to its two centrally located pedestrian streets complete with restaurants, cafés, and a variety of shops. The city is home to the FC Roskilde football club which play in the Danish 1st Division, the Roskilde Vikings RK rugby club, and the rowing club, Roskilde Roklub. In the 1970s, the city benefited from the opening of the university and from the completion of the Holbæk Motorway connecting it to Copenhagen. Roskilde has the oldest operational railway station in Denmark, with connections across Zealand as well as with Falster, Lolland, and Jutland. The local airport opened in 1973, mainly serving light aircraft for business use and flight instruction.