A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

The great Danube river starts here.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

Europe's highest peak is a key pillar of the Seven Summits mountaineering challenge.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

Three bridges straddle a stream, one stacked upon the other.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

19th century tunnels burrowed under Liverpool.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

The remains of a Canadian train crash are now mouldering beneath layers of rust and graffiti.

This natural sea cave hides a small wonderland of natural turquoise beauty.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

Monks turned this mountain into a temple by digging grottoes, tunnels, and a huge pagoda-like hall.

These layered sandstone mountains in China look like they are made of pressed crayons.

A lush desert oasis in the shape of a narrow crescent.

Ming Dynasty necropolis raided during the Cultural Revolution.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.