Fehmarnbelt Fixed Link

The Fehmarnbelt Fixed Link is an 18 km immersed road and rail tunnel currently under construction beneath the Baltic Sea, connecting Denmark and Germany. It will feature four motorway lanes, two electrified rail tracks, and a fifth maintenance/supply tunnel contained within massive prefabricated concrete sections, each about 217 m long and weighing ~73,500 t. This represents the largest immersed tunnel project worldwide and is engineered for durability, safety, and minimal marine disruption. Built in a purpose-designed factory on land, these segments will be floated and sunk into a trench. The tunnel includes advanced safety systems, integrated ventilation and evacuation corridors, and motorway and railway connectivity to the European TEN-T network. When complete, the tunnel is expected to significantly accelerate travel and freight logistics between Scandinavia and mainland Europe.

Visitors can explore public exhibitions at the Fehmarnbelt visitor centres in Rødbyhavn or Puttgarden. These feature models, films, and displays in English, German, and Danish that explain the tunnel’s construction and design. A dedicated 217‑m ramp viewing platform (‘Pilen’) at the Danish shore offers visitors an elevated vantage point over the construction site, open year‑round. Exhibits are typically free of charge and accessible during standard visitor‑centre hours; exact opening times vary seasonally so it's advisable to check the Femern website before planning your visit.