The pattern was set in the 19th century. Germans began arriving in 1824, drawn to the lowlands close to water; Italians followed starting in 1875 and pushed up into the rugged highlands the earlier settlers had left alone. The division was practical, but it hardened into culture. Today the region's seventy-five municipalities still carry the imprint of who climbed where. In the German towns, many residents speak Riograndenser Hunsruckisch, a dialect carried from the old country and kept alive for generations. In the Italian highlands, it is not unusual to hear Talian, the northern-Italian tongue that arrived with the first colonists. Two languages, two cuisines, two architectures - layered onto a single landscape of luscious forest and araucaria.

Where the Italians settled, the vineyards followed, and they never left. Wine is not a sideline here but a thread of identity, and around towns like Bento Goncalves and Garibaldi the vines run to the horizon. Brazil's modern wine industry grew largely out of these slopes, and the grape still sets the rhythm of the year. Caxias do Sul, the regional capital, made the heritage into a festival: the Festa da Uva, the Grape Festival, first held in 1931 and staged every other year since. It survived a dark interruption - during the Vargas-era suppression of immigrant culture, the celebration was halted in 1938 - and returned to become one of the great expressions of Italian-Brazilian pride. To drive the wine routes of the Serra Gaucha is to move through a working agricultural landscape that happens to taste of somewhere else.

The region has learned to package its beauty into routes, and each one tells a different story. The Rota Romantica traces the path of German colonization through storybook towns; the Caminhos da Colonia leans Italian; the Rota da Uva e o Vinho follows the grape. The Regiao das Hortensias takes its name from the hydrangeas - hortensias in Portuguese - that landscape its roadsides and gardens in blue and pink. At the heart of it all sit Gramado and Canela, mountain resorts perched near 850 meters where Brazilians come to feel, briefly, as though they have crossed an ocean. To the north, the hot springs of Nova Prata draw their own visitors to soak in the highland air.

Geographically, the Serra Gaucha is part of the Serra Geral, the great escarpment of the southern Brazilian Plateau, and the terrain shapes everything above it. The land climbs from lower plains to heights above 700 meters, dissected by valleys and crowned with araucaria forest that gives the region its distinctive silhouette. The araucaria itself - the candelabra pine of southern Brazil - is part of why the towns can feel so transported, its tiered branches standing in for the conifers of a European memory. It is a backdrop unlike anywhere else the immigrants might have settled, their villages reborn against a canvas of subtropical green. Push east and north toward the plateau's edge, and the gentle highlands give way to something far more dramatic: the sheer canyon walls of the Aparados da Serra, where the plateau ends and the land falls away toward the distant coast.