Herrenknecht

The world market leader in mechanized tunnelling technology. Nearly every large tunnel project on the planet — metro lines, rail links, water systems — runs on machines from a small town in the Black Forest.

Herrenknecht AG builds tunnel boring machines up to 19 meters in diameter, custom-engineered for each project’s geology. From its headquarters in Schwanau (population ~7,000), it has equipped landmark projects like the Gotthard Base Tunnel and the Crossrail line under London.