roles which would confer citizenship are reserved for men, the gender ratio of the citizenship is several men per woman. Further oddities are petty crimes against tourists resulting in a very high per-capita crime rate, and the city-state leading the world in per-capita wine consumption. A jocular illustration of these anomalies is sometimes made by calculating a "Popes per km2" statistic, which is greater than two because the country is less than half a square kilometre in area. Culture Vatican City is home to some of the most famous art in the world. St. Peter's Basilica, whose successive architects include Bramante, Michelangelo, Giacomo della Porta, Maderno and Bernini, is a renowned work of Renaissance architecture. The Sistine Chapel is famous for its frescos, which include works by Perugino, Domenico Ghirlandaio and Botticelli as well as the ceiling and Last Judgment by Michelangelo. Artists who decorated the interiors of the Vatican include Raphael and Fra Angelico. The Vatican Apostolic Library and the collections of the Vatican Museums are of the highest historical, scientific and cultural importance. In 1984, the Vatican was added by UNESCO to the List of World Heritage Sites; it is the only one to consist of an entire state. Furthermore, it is the only site to date registered with the UNESCO as a centre containing monuments in the "International Register of Cultural Property under Special Protection" according to the 1954 Hague Convention for the Protection of Cultural Property in the Event of Armed Conflict. There is a football championship, called the Vatican City Championship, with eight teams, including, for example, the Swiss Guard's FC Guardia and police and museum guard teams. Infrastructure Transport Vatican City has a reasonably well-developed transport network considering its size (consisting mostly of a piazza and walkways). As a state that is long and wide, it has a small transportation system with no airports or highways. The only aviation facility in Vatican City is the Vatican City Heliport. Vatican City is one of the few independent countries without an airport, and is served by the airports that serve the city of Rome, Leonardo da Vinci-Fiumicino Airport and to a lesser extent Ciampino Airport. There is a standard gauge railway, mainly used to transport freight, connected to Italy's network at Rome's Saint Peter's station by an spur, of which is within Vatican territory. Pope John XXIII was the first Pope to make use of the