Mount Elbrus is the highest mountain in Russia and in Europe, and the tenth most prominent peak in the world. A dormant volcano, Elbrus is in the Caucasus Mountains in Southern Russia, near the border with Georgia.
Elbrus has two summits, both of which are dormant volcanic domes. The taller west summit is 5,642 metres (18,510 ft);, the east summit is 5,621 metres (18,442 ft). The east summit was first ascended on 10 July 1829 (Julian calendar) by Khillar Khachirov. His nationality is claimed both by Kabardians and Karachay and used by nationalists of both sides. He was a guide for a Imperial Russian army scientific expedition led by General Emmanuel, and the west summit (by about 20 m; 66 ft) in 1874 by a British expedition led by F. Crauford Grove and including Frederick Gardner, Horace Walker, and the Swiss guide Peter Knubel of St. Niklaus.
Vatican City is a sovereign state and the smallest country in the world by size, at 0.44 sq km. Its territory is completely surrounded by Italy and is only one of three countries in the world that are enclaves of another country (the others being San Marino, also in Italy, and Lesotho in southern Africa). Also, it is the only country in the world that is an enclave of a city, as all of the lands around it is part of Rome, the capital of Italy.
The euro (sign: €; code: EUR) is the official currency of the eurozone, which consists of 19 of the 28 member states of the European Union: Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia, and Spain.