Grisons

The Grisons (/ɡriːˈzɒ̃/; French: [ɡʁizɔ̃]) or Graubünden (Swiss Standard German: [ɡraʊˈbʏndn̩] ^ⓘ), more formally the Canton of the Grisons or the Canton of Graubünden, is one of the twenty-six cantons of Switzerland. It has eleven districts, and its capital is Chur. The German name of the canton, Graubünden, translates as the "Grey Leagues", referring to the canton's origin in three local alliances, the Three Leagues. The other native names also refer to the Grey League: Grischùn in Sutsilvan, Grischun in the other forms of Romansh, and Grigioni in Italian. Rhaetia is the Latin name for the area. The Alpine ibex is the canton's heraldic symbol.

The largest and easternmost canton of Switzerland, it is also one of the three large southern Alpine cantons, along with Valais and Ticino. It is the most diverse canton in terms of natural and cultural geography, as it encompasses both sides of the Alps and several natural and cultural regions. The diversity of the canton is often compared to that of Switzerland as a whole and warrants it the name of "Little Switzerland". The Grisons is bordered by four cantons as well as Austria, Italy and Liechtenstein.

The state is the only trilingual canton of Switzerland. It is also the only one where Romansh, Switzerland's fourth national language, has official status. Romansh language and culture is an important part of local identity. In 2020 the canton had a population of 200,096. It is the least densely populated canton of Switzerland. The only sizable city in the canton is Chur, as the majority of the population lives in mountainous areas, including some of the most remote valleys of the country. One of the birthplaces of winter sports, the canton is a major tourist destination year-round, including a large number of Alpine resort towns, notably Davos and St. Moritz. The canton is also renowned for its extensive narrow-gauge railway network, operated by the Rhaetian Railway, and linking the capital with most valleys of the Grisons.

Formerly occupied by the Rhaeti, most of the lands of the canton became part of the Roman province called Raetia, which was established in 15 BC, with Curia, a settlement dating back to the Pfyn culture, as capital city. The area later became part of the lands of the diocese of Chur. The late middle ages saw the foundation of the League of God's House, the Grey League and the League of the Ten Jurisdictions. In 1471 an alliance gave birth to the Three Leagues, and before the end of the 15th century, the latter became an ally of the Old Swiss Confederacy. In 1803 the Three Leagues finally became one of the cantons of the Confederation.

The Grisons is Switzerland's largest and at the same time easternmost canton. Its geography, essentially marked by the Alps, is complex and encompasses a wide range of climates and ecosystems. It is one of the three large southern Alpine cantons, along with Ticino and Valais, which include regions on the south side of the Alps. But in contrast to those (and all other cantons), it fully extends on both sides of the great Alpine barrier, from the northern plains at Maienfeld to the southern plains at Roveredo. However, a large portion of the canton is neither clearly north nor south of the Alps, it is the Engadin (the "garden of the Inn"), a large inner Alpine valley oriented towards eastern Europe. Therefore there are parts of this canton in four of the five drainage basins of the country. The north of the canton is drained by the Rhine (ending in the North Sea), the south by the Po and Adige through several affluents (Mediterranean Sea), and the Engadin by the Danube through the Inn (Black Sea).

The Grisons lies fully within the Alps, with elevations above sea-level ranging from 260 to 4,049 metres (853 to 13,284 ft). It is both one of the highest and lowest cantons, and the second-highest when considering mean elevation. As a consequence, its topography is extremely rugged and many of the highest settlements in the country (and Europe) are found there, notably in the Upper Engadin. The mountains are numerous; well over 1,000 summits are in the canton. The highest is Piz Bernina, closely followed by numerous peaks in the homonymous range. Other prominent mountains are Piz Russein, Piz Kesch, Calanda, Aroser Rothorn and Rheinwaldhorn, see list of mountains of Graubünden for a more exhaustive list. The canton includes numerous subranges of the Alps other than the Bernina. These are the Albula, the Bregaglia, the Glarus, the Gotthard, the Lepontine, the Livigno, the Plessur, the Oberhalbstein, the Ortler, the Rätikon, the Samnaun, the Sesvenna and the Silvretta ranges.

The regions on the north side of the Alps are all drained by the Rhine and form an intricate network of valleys. The Rhine is both one of the longest rivers within the canton and the only one flowing directly into a sea. The sources of the Rhine are found in the west of the canton and form the Anterior Rhine and the Posterior Rhine. These two rivers converge at Reichenau to form the Rhine in the strict sense of the term. Just after the convergence, the valley opens and its floor constitutes the flattest plains of the canton, from Domat/Ems to Fläsch at the St. Gallen border. In the area around Chur, at the foot of the Calanda, the Rhine progressively changes its direction, from eastward to northward. The Anterior Rhine and Posterior Rhine include numerous tributaries as well before their own convergence. The former constitutes a long and straight valley, the Surselva, shut off from the lower plains by the Rhine Gorge. Its biggest tributaries are the rivers Glogn, Valser Rhine, Rabiusa, forming respectively the Val Lumnezia, the Vals Valley and the Safiental. The other one, the Posterior Rhine, notably collects the waters of the Avers Rhine and the Albula, which in turn collects the waters of the Gelgia and the Landwasser. Similarly to the Anterior Rhine, the upper portion of the Posterior Rhine is also shut off from the plains by the Viamala Gorge. After the convergence with the Albula, the Posterior Rhine forms a wide valley, the Domleschg, until it meets its anterior counterpart. After that, the Rhine collects the water of two important rivers: the Plessur at Chur, forming the valley of the Schanfigg, and the Landquart at the homonymous town, forming the Prätigau.

The Engadin is entirely drained by the Inn and is the only valley in Switzerland in the Danube basin. The Inn is one of the longest rivers in the canton and forms an almost straight valley, from the Maloja Pass to Martina, with a change of direction near Zernez. Despite its length and numerous tributaries, only a few long rivers converge with the Inn. These are the Flaz (forming the Val Bernina), the Spöl (forming the Val da Spöl) and the Clemgia (forming the Val S-charl). In the lower part of the Engadin is also the side valley of Samnaun. The main passes connecting the Engadin with the northern Grisons are (from west to east): the Julier Pass, the Albula Pass and the Flüela Pass.