Of all the Swiss cantons, the Grisons is both the largest and the least developed. Its German name is Graub√ľnden; to the Romansh-speaking population it's Grischun, and the Italians call it Grigioni. Grisons is the French (and English) name, although French is rarely spoken in this canton.

This sparsely settled, easternmost Swiss region is very mountainous and contains 225 sq. km (140 sq. miles) of glaciers. One-fifth of the canton's total area is covered with forests. The region contains the sources of the Rhine and Inn (En in Romansh) rivers, which form the major valleys of the canton. Juf, at nearly 2,100m (6,888 ft.) above sea level, is the highest permanently inhabited village in the Alps. Even the 150 or so valleys of the Grisons lie at high altitudes, between 886 and 1,969m (2,906-6,458 ft.), and the region's highest peak, Bernina, reaches 3,986m (13,074 ft.). The alpine scenery here differs from that of other areas of Switzerland in altitude as well as topography -- the air is clear and invigorating, which has led to the establishment of many health centers in the Grisons. The height makes it cooler at night, but it enjoys the extra daytime warmth of other southern cantons.

The Grisons was once a territory of Rhaetia, peopled by Celtic tribes in pre-Christian times. In 15 B.C., the Romans conquered the Rhaetians, began colonization, and built alpine roads. The Germanic Franks entered the Roman provinces in the 3rd century and established themselves along the Rhine. They and their successors, the Ostrogoths, introduced Teutonic influences into the Roman territories they seized, gradually changing the language of the inhabitants to Germanic dialects, especially in the northern regions. As a result, German is spoken today by about half the Grisons population, mainly around Davos and Chur, the capital of the canton. About a sixth of the people of the Grisons -- those living in the south -- speak the language of their next-door neighbor, Italy.

The people of the upper valleys of the Rhine and the Inn were isolated enough to resist Germanic influences, and today they still cling to their ancestral tongue, Romansh -- the language of a third of the Swiss living in the Grisons. Both the dialect spoken in the Engadine (Ladin) and that spoken in the Vorderrhein Valley (Surveltisch) are derived from the Latin of Rhaetia. The centuries have altered it, so that today it sounds rather like Spanish spoken with a German accent. In 1938, Romansh officially became the fourth of the Swiss national languages.

The Grisons was one of the last regions of Switzerland to benefit from busy commerce with the rest of the country. Cars were forbidden on all roads until 1927, and even today it's illegal to drive cars in Arosa after nightfall. This ban on the use of roads helped to popularize the Rhaetian railway, whose narrow-gauge trains cross the region along hairpin turns and through dozens of tunnels. Today, this railway, as well as the postal buses that crisscross the district, provide panoramas of a harsh and sometimes-bleak landscape.

The peasants of this canton banded together in 1395 to form the Ligue Grise (Gray League), from which the name Grisons is derived. Two other such leagues were formed in the area to oppose Habsburg domination. In 1803, the three leagues formed a single canton, which joined the Swiss Confederation. The belief system of the Protestant Reformation, however, was adopted by only part of the canton, and today sections of it remain staunchly Catholic.

Since the 1950s, much of the Grisons has earned its living from tourists, who visit for the skiing and the small villages, as well as the local red and "green" wines (vetliner), the exquisite embroidery, and the hand-woven linens still produced in many mountain homes.