The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

This abandoned bridge over the River Irvine may be the oldest surviving railway viaduct in the world.

Built as a training camp, this site became a detainment center for prisoners of war and German civilians during World War I.

The half-finished remains of what would have been Scotland’s biggest piece of landscape art.

Believed to be the smallest castle in Europe.

Visible at low tide, this rusting vessel is one of the last surviving examples of the X-Class "Midget" submarines.