Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

A huge monument to a bizarre book written by Turkmenistan’s longstanding dictator.

This harsh mountain path was built as a strange attempt to improve the health of Turkmen citizens.

An eccentric dictator's take on a Turkmen version of Disneyland.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

The steepest classic funicular in the world glides along a dizzying incline.

The world's longest and deepest train tunnel.

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

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

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

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

It's clear this abandoned Art Deco gem was no ordinary cleaners.

Rolling sand dunes of the Sahara... in the middle of the Atlantic Ocean.

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

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

This abandoned racetrack looks like it is set to hold competitions in the apocalypse.

A beautiful but toxic fountain of mercury.

This cemetery features modernist statues as strange as its name.