The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

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

A fiery crater has been burning in the Karakum Desert since 1971.

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

Former island in the Aral Sea used to be a top-secret Russian bio-weapons facility.

Rusting ships sit in a desert where a sea used to be.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

A six-story, asymmetrical tower filled to the brim with scientific experiments.

This small train ride offers stellar views of the Grand Garden Palace.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A striking 12th-century-style castle built on the edge of a cliff.

This shuttered power plant is now Turkey's first industrial archaeology museum.

Large miniature theme park with 100-plus models.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

Step back in time and witness the fall of Constantinople.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A marvel of Byzantine engineering under the streets of Istanbul.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

This historic black and white monastery is one of Bulgaria's architectural jewels.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

Stone pillars and a petrified wedding party in the hills of North Macedonia.