Inside a humble hangar is some of the best roller derby the world has to offer.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

Medieval irrigation channels built into the sides of mountains provided Valais with water for hundreds of years.

These spooky and unusual stone formations create an underworldly landscape.

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

One of the world's most complex timepieces.

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

This simple apartment may have inspired some of the most important theories in the history of science.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

An icy lake tucked among jaw-dropping alpine panoramas.

Large Hadron Collider and the Birthplace of World Wide Web.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

This secret Swiss fortress is disguised as a harmless pink house, complete with fake windows.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

150-year-old satirical tableaus made from stuffed frogs.

World's largest permanent maze made of 18,000 conifers.

Abbey built on the ruins of Roman catacombs.

What this Good Friday parade lacks in baroque filigree it makes up in somber gothic imagery.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Artworks by loners, prisoners and the criminally insane.

Standing stones found on a construction site are re-erected.