The National Redoubt is a vast defensive network of fortifications in the Swiss Alps, built to protect the nation during World War II.

Forte Airolo is a well-preserved historical military fortress.

Motto Bartola is a well-preserved fortress located in the Airolo region of Switzerland.

The Foppa Grande is a formidable artillery fortification situated above the town of Airolo.

Forte Ospizio San Gottardo is a well-preserved military fort.

Sasso da Pigna is a formidable example of Swiss military architecture carved into the Gotthard Pass.

The Gotthard Fortress is a discreetly integrated defense network.

The San Carlo Fortress, perched in the mountaneous Ticino region, offers breathtaking views.

The Hospental Tower is an imposing fortification that once guarded the Gotthard Pass.