Sasso San Gottardo military tour
Time Out says
Discover what secrets are hidden in the heart of this mountain-turned-military complex
This strategic fort deep within the Gotthard massif was built to be completely hidden from view. Now the once secret stronghold is open to the public as a museum which provides a close look at its historical past. Next to the historical museum there are exhibitions on various themes which offer a glimpse of the future. Conference rooms are available here as well. Though hidden from view, the Sasso San Gottardo is open to the world outside.