Sperrstelle Trin

Sperrstelle Trin is a military fortress with bunkers and defensive structures in the mountains near Trin, Switzerland. The complex features several interconnected underground chambers and fortified positions spread across the terrain.

The fortress was built during the 20th century to protect strategic mountain passes and important routes from potential invasion. It was part of Switzerland's broader defense strategy during the turbulent decades of that era.

The site reflects how Switzerland prepared to defend itself, with exhibitions showing weapons and plans from different eras. Visitors can understand what purpose these fortifications served in the country's defense planning.

Visitors can join guided tours from April through October to explore the tunnels, bunkers, and defensive systems throughout the complex. Wear sturdy footwear and be prepared for narrow passages and some steep sections inside.

Original tank barriers and combat positions remain visible at several points throughout the complex, showing exactly how the defenders were positioned. These remnants allow visitors to understand the actual layout of the defensive lines.