The region lies at the far eastern edge of South Tyrol, on the border with East Tyrol, with the villages of Sesto (Sexten), San Candido (Innichen) and Dobbiaco (Toblach). Above them rise the Tre Cime di Lavaredo — the most famous rock towers in the Alps and part of the UNESCO World Heritage Dolomites.

In summer, the Tre Cime Nature Park is the central destination. The classic loop starts at Rifugio Auronzo and circles the massif in a few hours — scenically spectacular, though heavily visited in high summer. Quieter alternatives lie in the valleys around it: the Val Fiscalina (Fischleintal) or the Val di Landro (Höhlensteintal), both with easier trails and less traffic.

In winter, 3 Zinnen Dolomites links five mountains into 115 kilometres of pistes. Cross-country skiing is just as important: the Alta Val Pusteria has over 200 kilometres of tracks — the largest cross-country network in Italy — and was once a Tour de Ski venue. Add to that toboggan runs, ski touring routes and a Nordic-focused hotel scene rather than an après-ski one.