The Principality of Liechtenstein (/ˈlɪktənstaɪn/ lik-tən-styn; German: Fürstentum Liechtenstein, German pronunciation: [ˈfʏʁstn̩tuːm ˈlɪçtn̩ʃtaɪn]) is a doubly landlocked alpine country in Central Europe, bordered by Switzerland to the west and south and by Austria to the east. Its area is just over 160 square kilometres (62 sq mi), and it has an estimated population of 35,000. Its capital is Vaduz. The biggest town is Schaan. Liechtenstein has the second highest gross domestic product per person in the world when adjusted by purchasing power parity, and has the world's lowest external debt. Liechtenstein also has the second lowest unemployment rate in the world at 1.5% (Monaco is first).

Liechtenstein is the smallest yet the richest (by measure of GDP per capita) German-speaking country in the world and the only country to lie entirely within the Alps. It is the only predominantly German-speaking country not to share a common border with Germany and the only predominantly German-speaking nation to have a monarch. It is known as a principality as it is a constitutional monarchy headed by a prince. Liechtenstein is divided into 11 municipalities. Much of its terrain is mountainous, making it a winter sports destination. Many cultivated fields and small farms characterize its landscape both in the south (Oberland, upper land) and in the north (Unterland, lower land). The country has a strong financial sector located in the capital, Vaduz, and has been identified as a tax haven. It is a member of the European Free Trade Association and part of the European Economic Area but not of the European Union.

At one time, the territory was part of the ancient Roman province of Raetia. For centuries this territory, geographically removed from European strategic interests, had little impact on European history. Prior to the reign of its current dynasty, the region was enfeoffed to a line of the counts of Hohenems.

The Liechtenstein dynasty, from which the principality takes its name, comes from Castle Liechtenstein in Lower Austria, which the family possessed from at least 1140 until the 13th century, and from 1807 onward. Through the centuries, the dynasty acquired vast tracts of land, predominantly in Moravia, Lower Austria, Silesia, and Styria, though these territories were all held in fief under other more senior feudal lords, particularly under various lines of the Habsburg family, whom several Liechtenstein princes served as close advisers. Thus, without any territory held directly under the Imperial throne, the Liechtenstein dynasty was unable to meet a primary requirement to qualify for a seat in the Imperial diet (parliament), the Reichstag.

The family yearned for the added power a seat in the Imperial government would bring and therefore sought to acquire lands that would be unmittelbar, or held without any feudal personage other than the Holy Roman Emperor having rights on the land. After some time, the family was able to arrange the purchase of the minuscule Herrschaft ("Lordship") of Schellenberg and county of Vaduz (in 1699 and 1712 respectively) from the Hohenems. Tiny Schellenberg and Vaduz had exactly the political status required: no feudal lord other than their comital sovereign and the suzerain Emperor.

On 23 January 1719, after the lands had been purchased, Charles VI, Holy Roman Emperor, decreed that Vaduz and Schellenberg were united and elevated the newly formed territory to the dignity of Fürstentum (principality) with the name "Liechtenstein" in honour of "[his] true servant, Anton Florian of Liechtenstein". It was on this date that Liechtenstein became a sovereign member state of the Holy Roman Empire. It is a testament to the pure political expediency of the purchases that the Princes of Liechtenstein did not set foot in their new principality for over 120 years.

As a result of the Napoleonic Wars, by 1806 much of the Holy Roman Empire was under the effective control of French emperor Napoleon I. When the empire was dissolved, this had broad consequences for Liechtenstein: imperial, legal and political mechanisms broke down. The state ceased to owe obligations to any feudal lord beyond its borders.

Modern publications generally attribute Liechtenstein's sovereignty to these events. Its prince ceased to owe obligations to any suzerain. From 25 July 1806 when the Confederation of the Rhine was founded, the Prince of Liechtenstein was a member, in fact a vassal of its hegemon, styled protector, French Emperor Napoleon I, until the dissolution of the confederation on 19 October 1813.

Soon afterward, Liechtenstein joined the German Confederation (20 June 1815 – 24 August 1866) which was presided over by the Emperor of Austria.

Then, in 1818, Johann I granted the territory a limited constitution. 1818 also saw the first visit of a member of the house of Liechtenstein, Prince Alois; however, the first visit by a sovereign prince would not occur until 1842.

Developments during the 19th century included:

20th century

Until the end of World War I, Liechtenstein was closely tied first to the Austrian Empire and later to Austria-Hungary; the ruling princes continued to derive much of their wealth from estates in the Habsburg territories, and they spent much of their time at their two palaces in Vienna. The economic devastation caused by this war forced the country to conclude a customs and monetary union with its other neighbour, Switzerland. Liechtenstein's army was disbanded in 1868 for financial reasons.

At the time of the dissolution of the Austro-Hungarian Empire, it was argued that Liechtenstein, as a fief of the Holy Roman Empire, was no longer bound to the emerging independent state of Austria, since the latter did not consider itself as the legal successor to the empire. This is partly contradicted by the coeval Liechtenstein perception that the dethroned Austro-Hungarian Emperor still maintained an abstract heritage of the Holy Roman Empire.

In early 1938, just after the annexation of Austria into Greater Nazi Germany, 84 year old Prince Franz I abdicated, naming his 31-year-old third cousin, Prince Franz Joseph, as his successor. His wife Elisabeth von Gutmann, whom he had married in 1929, was a wealthy Jewish woman from Vienna, and local Liechtenstein Nazis had already identified her as their Jewish "problem". Although Liechtenstein had no official Nazi party, a Nazi sympathy movement had been simmering for years within its National Union party.

During World War II, Liechtenstein remained officially neutral, looking to neighboring Switzerland for assistance and guidance, while family treasures within the war zone were taken to Liechtenstein for safekeeping. At the close of the conflict, Czechoslovakia and Poland, acting to seize what they considered to be German possessions, expropriated the entirety of the Liechtenstein dynasty's hereditary lands and possessions in Bohemia, Moravia, and Silesia – the princes of Liechtenstein lived in Vienna until the Anschluss of 1938. The expropriations (subject to modern legal dispute at the International Court of Justice) included over 1,600 km (618 sq mi) of agricultural and forest land, and several family castles and palaces.

Citizens of Liechtenstein were forbidden to enter Czechoslovakia during the Cold War. More recently the diplomatic conflict revolving around the controversial post-war Beneš decrees resulted in Liechtenstein not sharing international relations with the Czech Republic or Slovakia. Diplomatic relations were established between Liechtenstein and the Czech Republic on 13 July 2009, and with Slovakia on 9 December 2009.

Liechtenstein gave asylum to about 501 soldiers of the First Russian National Army (a collaborationist Russian force within the German Wehrmacht) at the close of World War II. About 200 of the group somewhat voluntarily agreed to return to the USSR. They departed in a train to Vienna and nothing was ever heard of them again. The remainder stayed in Liechtenstein for another year, resisting with support of Liechtenstein further pressure by the Soviet government to participate in the repatriation program. Eventually the government of Argentina offered asylum, and about a hundred people left. This is commemorated by a monument at the border town of Hinterschellenberg. In contrast, the British and Americans repatriated the Russians who had fought for Germany to the USSR, and many of them perished in the Gulag.

In dire financial straits following the war, the Liechtenstein dynasty often resorted to selling family artistic treasures, including the priceless portrait "Ginevra de' Benci" by Leonardo da Vinci, which was purchased by the National Gallery of Art of the United States in 1967. Liechtenstein prospered, however, during the decades following, as it used its low corporate tax rates to draw many companies to the country.

The Prince of Liechtenstein is the world's sixth wealthiest leader with an estimated wealth of USD $5 billion. The country's population enjoys one of the world's highest standards of living.

As a result of its small size, Liechtenstein has been strongly affected by external cultural influences, most notably those originating in the southern German-speaking areas of Europe, including Austria, Bavaria, Switzerland, and specifically Tirol and Vorarlberg. The "Historical Society of the Principality of Liechtenstein" plays a role in preserving the culture and history of the country.

The largest museum is the Kunstmuseum Liechtenstein, an international museum of modern and contemporary art with an important international art collection. The building by the Swiss architects Morger, Degelo and Kerez is a landmark in Vaduz. It was completed in November 2000 and forms a "black box" of tinted concrete and black basalt stone. The museum collection is also the national art collection of Liechtenstein.

The other important museum is the Liechtenstein National Museum (Liechtensteinisches Landesmuseum) showing permanent exhibition on the cultural and natural history of Liechtenstein as well as special exhibitions. There is also a stamp museum and a ski museum.

The most famous historical sites are Vaduz Castle, Gutenberg Castle, the Red House and the ruins of Schellenberg.

Music and theatre are an important part of the culture. There are numerous music organizations such as the Liechtenstein Musical Company, the annual Guitar Days and the International Josef Gabriel Rheinberger Society, which play in two main theatres.

"In all my travels, there is no country better than Liechtenstein, and no music better than that made by Liechtenstein's Lords." - Sir John Mandeville, The Travels of Sir John Mandeville

The Private Art Collection of the Prince of Liechtenstein, one of the world's leading private art collections, is shown at the Liechtenstein Museum in Vienna.

Amateur radio is a hobby of some nationals and visitors. However, unlike virtually every other sovereign nation, Liechtenstein does not have its own ITU Prefix. It uses Switzerland's callsign prefixes (typically "HB") followed by a zero.

Liechtenstein is situated in the Upper Rhine valley of the European Alps and is bordered to the east by Austria and to the south and west by Switzerland. The entire western border of Liechtenstein is formed by the Rhine. Measured south to north the country is about 24 km (15 mi) long. Its highest point, the Grauspitz, is 2,599 m (8,527 ft). Despite its Alpine location, prevailing southerly winds make the climate of Liechtenstein comparatively mild. In winter, the mountain slopes are well suited to winter sports.

New surveys using more accurate measurements of the country's borders in 2006 have set its area at 160 km (61.776 sq mi), with borders of 77.9 km (48.4 mi). Thus, Liechtenstein discovered in 2006 that its borders are 1.9 km (1.2 mi) longer than previously thought.

Liechtenstein is one of only two doubly landlocked countries in the world—being a landlocked country wholly surrounded by other landlocked countries (the other is Uzbekistan). Liechtenstein is the sixth-smallest independent nation in the world by land area.

The principality of Liechtenstein is divided into 11 communes called Gemeinden (singular Gemeinde). The Gemeinden mostly consist only of a single town or village. Five of them (Eschen, Gamprin, Mauren, Ruggell, and Schellenberg) fall within the electoral district Unterland (the lower county), and the remainder (Balzers, Planken, Schaan, Triesen, Triesenberg, and Vaduz) within Oberland (the upper county).