Romania is a country in the European peninsula and neighbors Bulgaria, Ukraine, Serbia, and Hungary. Romania's known for its mountains, forests, and medieval churches and castles. The Carpathian Mountain ranges, stretching across eight nations, form a 900 km arc across the country, cordoning off the Transylvania region from the rest of the country. Tourism in Romania has greatly benefitted from this unique geographical position since the Carpathians offer various tourist attractions such as caving, cross-country skiing, rock climbing, skiing, wildlife, and bird watching. They are also home to a 3500-year-old underground glacier and 60% of the world's brown bear population. The origins of Dracula folklore can be traced to Romania's Bran Castle.