licensed taxi service operates nationwide. There are seven licensed taxi companies operating in the republic, and Italian taxis regularly operate within San Marino when carrying passengers picked up in Italian territory. There is a aerial tramway connecting the City of San Marino on top of Monte Titano with Borgo Maggiore, a major town in the republic, with the second largest population of any Sammarinese settlement. From here a further connection is available to the nation's largest settlement, Dogana, via the local bus service. Two aerial tramway cars (gondolas) operate, with service provided at roughly 15-minute intervals throughout the day. A third vehicle is available on the system, a service car for the use of engineers maintaining the tramway. Railway Today, there is no railway in San Marino, but for a short period before World War II, it had a single narrow-gauge line called the Ferrovia Rimini–San Marino which connected the country with the Italian rail network at Rimini. Because of the difficulties in accessing the capital, City of San Marino, with its mountain-top location, the terminus station was planned to be located in the village of Valdragone, but was extended to reach the capital through a steep and winding track comprising many tunnels. The railway was opened on 12 June 1932. An advanced system for its time, it was an electric railway, powered from overhead cables. It was well built and had a high frequency of passengers, but was almost completely destroyed during World War II. Many facilities such as bridges, tunnels, and stations remain visible today, and some have been converted to parks, public footpaths, or traffic routes. Debate continues on whether the line should be restored, as Rimini is the nearest bigger city and has access to the Adriatic sea, the Italian railway network, and the Federico Fellini International Airport. Culture The Three Towers of San Marino are located on the three peaks of Monte Titano in the capital. They are depicted on both the flag of San Marino and its coat of arms. The three towers are: Guaita, the oldest of the three (it was constructed in the 11th century); the 13th-century Cesta, located on the highest of Monte Titano's summits; and the 14th-century Montale, on the smallest of Monte Titano's summits, still privately owned. University The (University of the Republic of San Marino) is the main university, which includes the Scuola Superiore di Studi Storici di