Borders are usually defined as geographical boundaries, imposed either by features such as oceans and terrain, or by political entities such as governments, sovereign states, federated states, and other subnational entities. Political borders can be established through warfare, colonization, or mutual agreements between the political entities that reside in those areas.
The Tawan Bogd is a mountain massif in Mongolia, near the triple border with China and Russia. Its highest peak, the Khüiten Peak, is the highest point of Mongolia at 4374 meters above sea level.
In geography, a confluence occurs where two or more watercourses join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river ; or where two streams meet to become the source of a river of a new name ; or where two separated channels of a river rejoin at the downstream end.
The Three-Country Cairn is the tripoint at which the international borders of Sweden, Norway and Finland meet, and the name of the monument that marks the point. It is the northernmost international tripoint in the world.
A quadripoint is a point on Earth where four distinct political territories meet. The territories can be of different types, such as national and provincial. In North America, several such places are commonly known as Four Corners. Several examples exist throughout the world that use other names.
A boundary marker, border marker, boundary stone, or border stone is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary. There are several other types of named border markers, known as boundary trees, pillars, monuments, obelisks, and corners. Border markers can also be markers through which a border line runs in a straight line to determine that border. They can also be the markers from which a border marker has been fixed.
Mont Dolent is a mountain in the Mont Blanc massif and lies on the border between Italy, Switzerland and France.
Khüiten Peak, also known in China as Friendship Peak, is a mountain peak in the Altai Range. The international border between China and Mongolia runs across its summit point, which, at 4,356 metres (14,291 ft), is the highest point in the Altais and the highest in both Mongolia and Altay Prefecture in Western China. The peak is covered in snow year-round.
The borders of Brazil are the international borders that Brazil shares with neighbouring countries. Brazil has terrestrial boundaries with nine countries of South America, and with the French Department of Guiana. Brazil has borders with every country in South America with the exception of Chile and Ecuador, totalling 16,885 kilometres (10,492 mi). Brazil has the world's third longest land border, behind China and Russia.
The Mongolia–Russia border is the international border between Mongolia and the Russian Federation. It runs from west to east between the two tripoints with China for 3,452 km (2,145 mi). The boundary is the third longest border between Russia and another country, behind the Kazakhstan–Russia border and the China–Russia border.
The Chinese–Russian border or the Sino-Russian border is the international border between China and Russia. After the final demarcation carried out in the early 2000s, it measures 4,209.3 kilometres (2,615.5 mi), and is the world's sixth-longest international border. According to the Russian border agency, as of October 1, 2013, there are more than 160 land border crossings between Russia and China, all of these border crossings are open 24 hours. There are crossing points established by the treaty including railway crossings, highway crossings, river crossing, and mostly ferry crossings.
The France–Switzerland border is 572 km (355 mi) long. Its current path is mostly the product of the Congress of Vienna of 1815, with the accession of Geneva, Neuchâtel and Valais to the Swiss Confederation, but it has since been modified in detail, the last time being in 2002. Although most of the border, marked with border stones, is unguarded, several checkpoints remain staffed, most notably on busy roads.
The border between France and Germany has a length of 450 km (280 mi), about half of it along the Rhine.
The Dreiländereck is a monument in Basel, Switzerland. It marks the tripoint where the borders of France, Germany and Switzerland meet. The France–Germany border, the Germany–Switzerland border and France–Switzerland border meet there.
The China–Mongolia border is the international border between China and Mongolia. It runs from west to east between the two tripoints with Russia for 4,630 km (2,880 mi), with most of the boundary area lying in the Gobi Desert. It is the world's fourth longest international border.
The North Korea–Russia border, according to the official Russian definition, consists of 17.3 kilometres (10.7 mi) of "terrestrial border" and 22.1 km of "maritime border". It is the shortest of the international borders of Russia.
The China–North Korea–Russia tripoint is the tripoint where the China–Russia border and the North Korea–Russia border intersect. The tripoint is in the Tumen River about 500 meters upstream from Korea Russia Friendship Bridge and under 2,000 meters from the Russian settlement of Khasan.
The Dreiländereck is a mountain in the Karavanks at the top of which is the tripoint of the countries of Austria, Italy and Slovenia. It thus links the three language regions of German, Italian and Slovenian. The height of the summit is 1,508 m (AA).
