A remote, centuries-old underground mosque with a lunar aesthetic.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

Jurassic clays where the dinosaurs once roamed.

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

This retro, UFO-like structure is a remnant of the Soviet-era circus.

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

One of the most ethnically diverse spots on the planet.

The largest Lenin statue in Central Asia was moved to an empty field rather than being destroyed.

A bustling bazaar with an elaborate facade in Central Asia’s underrated capital.

This medieval citadel once guarded the western entrance of the Pamir Highway.

The world's second-tallest flagpole stands proud despite dropping rank.

This dark, damp, perilous tunnel is the only passage from north to south Tajikistan.

The remains of an ancient city-state along the Silk Road.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

A mysterious architectural gem in one of the most elegant areas of Buenos Aires.

Constructed on the ruins of a convent, this tower saved countless lives.

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

This former shopping center now acts as the eccentric lair of the Venezuelan secret police and their shadow prison.

A dangling church built over a Colombian gorge.

A swing to dangle you off the very edge.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

It took 82 years and four different plaques to finally get the story right.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.