Trentino-Alto Adige History & Heritage Guide 2026

Historical timeline

Key moments that shaped Trentino-Alto Adige.

1. 1

   Prehistory and the Iceman

   The Alpine valleys were settled from the Neolithic, and the region's most famous inhabitant is Ötzi the Iceman, a man who died around 3300 BC high on the Tisenjoch ridge in the Ötztal Alps and was preserved in a glacier until his discovery in 1991. Ötzi, with his copper axe, longbow, and hide clothing, is the most important Copper Age find in Europe. Bronze Age communities followed, leaving fortified hilltop settlements and metalworking sites across the Adige and Isarco valleys.

2. 2

   Rhaetian Peoples

   Before Roman conquest the region was home to the Rhaeti (Rhaetians), a constellation of Alpine peoples whose distinctive material culture, the Fritzens-Sanzeno culture, is named partly after the Trentino village of Sanzeno. Skilled metalworkers and farmers of the high valleys, they spoke a non-Italic language preserved in inscriptions and were later partly linked by ancient writers to the Etruscans. Their hillforts and sanctuaries dotted the Val di Non and the Isarco valley.

3. 3

   Roman Tridentum

   Rome subdued the Alpine peoples under Augustus around 15 BC, and Trento became the Roman municipium of Tridentum, a fortified river town guarding the strategic route north toward the Brenner Pass. Roman roads, walls, a forum, and houses with mosaics have been excavated beneath the modern city, much of it visible in the underground Tridentum archaeological area (SASS). The Adige valley was Romanised in its towns while the high valleys retained older traditions and were among the last to be Christianised.

4. 4

   Early Middle Ages and the Prince-Bishopric

   After Rome, the region passed through Ostrogothic, Lombard, and Frankish hands, becoming a contested march between the Italian and Germanic worlds. Christianity spread from late antiquity, and Trento emerged as an important bishopric. In 1027 the Emperor Conrad II granted temporal power to the Bishop of Trent, creating the Prince-Bishopric of Trent, a semi-independent ecclesiastical state that would govern much of the region for centuries alongside the neighbouring Bishopric of Bressanone (Brixen).

5. 5

   The County of Tyrol

   The Counts of Tyrol, taking their name from Castel Tirolo above Merano, rose from advocates of the prince-bishops to dominate the region. By the 14th century Tyrol had grown into a powerful Alpine principality, and in 1363 Margaret 'Maultasch', the last independent Countess, ceded Tyrol to the Habsburgs. From then the region was bound to the House of Austria, with Bolzano, Merano, and the German-speaking valleys firmly within the Tyrolean county while the prince-bishops held sway around Trento.

6. 6

   The Council of Trent

   Trento entered world history when the Catholic Church chose it for the ecumenical council convened to answer the Protestant Reformation. Held in the cathedral and the church of Santa Maria Maggiore across twenty-five sessions between 1545 and 1563, the Council of Trent reaffirmed Catholic doctrine, reformed clerical abuses, fixed the canon of scripture, and launched the Counter-Reformation. The city was chosen as an imperial bishopric on the frontier between Italian and German lands, a compromise location acceptable to both pope and emperor.

7. 7

   Habsburg Rule and Napoleonic Upheaval

   For more than two centuries the prince-bishoprics of Trent and Bressanone coexisted with Habsburg Tyrol, until the upheavals of the Napoleonic era swept the old order away. The ecclesiastical states were secularised around 1803, and the region was passed between Austria and Bavaria. In 1809 the Tyrolean innkeeper Andreas Hofer led a celebrated popular uprising against Bavarian and French rule, becoming a national hero before his capture and execution in 1810. The Congress of Vienna restored the whole of Tyrol to Austria in 1815.

8. 8

   The First World War Front

   When Italy entered the war against Austria-Hungary in 1915, the front cut directly through the region's highest mountains. Soldiers fought and froze at altitudes above 3,000 metres in the Dolomites and the Adamello, tunnelling through rock and ice, building fortified positions, and detonating mines beneath enemy peaks. Lagazuoi, the Marmolada, the Tre Cime, and the Pasubio became names of attrition and endurance. Today restored tunnels, trenches, and open-air museums preserve this 'white war' in the mountains.

9. 9

   Annexation and Italianization

   The 1919 Treaty of Saint-Germain transferred the southern part of Tyrol, then around ninety per cent German-speaking, from Austria to Italy. Under the Fascist regime an aggressive campaign of Italianization banned German in schools and offices, replaced place names, and encouraged Italian migration to the new industries of Bolzano. In 1939 the 'Option Agreement' between Mussolini and Hitler forced South Tyroleans to choose between emigrating to the Reich or staying and assimilating, splitting communities and families.

10. 10

    Autonomy and the Modern Region

    After the war the 1946 Gruber–De Gasperi Agreement between Italy and Austria guaranteed protections for the German-speaking minority. A weak first autonomy statute in 1948 and continuing grievances led to protests and bombings through the 1950s and 1960s. The landmark Second Autonomy Statute of 1972 gave the provinces of Bolzano and Trento extensive self-government, language rights, and proportional representation, defusing the conflict. Today Trentino-Alto Adige is one of Italy's wealthiest, most autonomous, and most stable regions, and the Dolomites were inscribed as a UNESCO World Heritage Site in 2009.

Historical sites

Places where Trentino-Alto Adige's past comes alive.