Even Juf, inhabited by some 30 people only but holding a European record, is reached 5 times a day by public transport. The Swiss Federal Railways extend only a few kilometres into the canton, to the capital, Chur, where passengers transfer to the Rhaetian Railway. ""Rhaetia"" is the Latin name for the area. The Albula Line became a UNESCO world heritage as did the Bernina Railway, the highest and only railway to cross the alps without the use of a tunnel at the pass. In winter some of the road passes are closed  whereas several high mountain passes such as the Julier, Bernina and Lukmanier are kept open all winter (subject to restrictions). Being the highest elevated state in Switzerland, Grisons hosts huge alpine areas that are not accessible by any means of transport but have to be walked to. The Engiadin valley has its own airport, Samedan Airport. The canton has a large concentration of medieval castles (and ruins). Many such examples are found in the Domleschg area. Close by lies the church of Zillis, where 1130/40 a famous romanesque illustrated ceiling was added which is now treated as national heritage. Three World Heritage Sites are located in the canton: the Benedictine Convent of Saint John, the Swiss Tectonic Arena Sardona and the Rhaetian Railway in the Albula and Bernina Landscapes. The Grisons are known for a dried-beef delicacy called Bündnerfleisch and for a nut and honey pie known as Bündner Nusstorte. Another specialty, predominantly made in the western part of Grison, are Capuns, hearty dumplings with pieces of meat wrapped in chard leaves. The Raetia national football team, a member of the NF-Board, represents the region at international level, and competed in the 2012 VIVA World Cup. Graubünden successfully reintroduced ibex in the early 20th century after it had all but died out from the Alps, except for an area in the Aosta Valley in Italy, Parco Nazionale Gran Paradiso. Similarly, it reintroduced the bearded vulture and lynx in the 21st century, which had been extinguished, though the lynx remains rare.