Open Monument Day Trier

The Open Monument Day was introduced in 1993 as the German version of the European "Journées du Patrimoine" and has become one of Germany's largest cultural events — with around four million visitors nationwide annually. In Trier, between 20 and 40 monuments participate each year: Roman World Heritage sites, medieval churches, monasteries, bourgeois houses, industrial buildings, bridges, fountains, city fortifications, and archaeological sites.

The 2026 motto — "NetzWERKE: Monuments & Infrastructure" — focuses attention on historical water supply systems, road networks, sewage systems, bridges, railway facilities, and energy infrastructures. In Trier, with the Roman Bridge, Roman aqueducts, Imperial Baths, and ancient city drainage, there is a particularly strong thematic connection. Several guided tours on Roman infrastructure are expected, supplemented by programs on medieval and modern buildings.

The Trier Cathedral, as the most important World Heritage site, is regularly accessible free of charge all year round, but offers special guided tours on the Open Monument Day.