Champagne ages in the many caves and tunnels under Reims, which form a sort of maze below the city. Carved from chalk, some of these passages date back to Roman times. The "biscuit rose de Reims" is a biscuit frequently associated with Champagne wine. Reims was long renown for its "pain d'épices" and "nonnette". Between 1925 and 1969 Reims hosted the "Grand Prix de la Marne" automobile race at the circuit of Reims-Gueux. The French Grand Prix took place here 14 times between 1938 and 1966. In October 2018, the city hosted the second Teqball World Cup. The city has hosted the Reims Marathon since 1984. Reims is served by two main railway stations: Gare de Reims in the city centre, the hub for regional transport, and the new Gare de Champagne-Ardenne TGV southwest of the city with high-speed rail connections to Paris, Metz, Nancy and Strasbourg. The motorways A4 (Paris-Strasbourg), A26 (Calais-Langres) and A34 intersect near Reims. Public transport within the city consists of buses and a tramway, the latter opened in 2011. The Canal de l'Aisne à la Marne is a waterway. There is also an airport, Reims – Prunay Aerodrome, but it had, as of 2020, no commercial airline flights. Among the parks and gardens of Reims are the Parc de Champagne, where a Monument to the Heroes of the Black Army is located, and the Promenades. The URCA (Université de Reims Champagne-Ardenne) was founded in 1548. This multidisciplinary university develops innovative, fundamental, and applied research. It provides more than 18,000 students in Reims (22,000 in Champagne-Ardenne) with a wide initial undergraduate studies program which corresponds to society's needs in all domains of the knowledge. The university also accompanies independent or company-backed students in continuing professional development training. The Institut d'Etudes politiques de Paris, the leading French university in social and political sciences, also known as Sciences Po, opened a new campus in the in 2010. It hosts both the Europe-Africa and Europe-America Program with more than 1,500 students in the respective programs. In 2012 the first Reims Model United Nations was launched, which gathered 200 international students from all the Sciences Po campuses.