This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

These quintessentially English stepping stones were built for Victorian tourists.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

In the depths of Glasgow Cathedral's crypt, one pillar stands out from all others.

The abandoned transportation hub hides within the Glasgow attraction it once served.

A scattered trail of street art adds a pop of color to the city's stark structures.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A secret door leads to this cozy dive that sells only “milk.”

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Architectureal fantasy quarter of Rome.

These fantastically named natural pools look like something out of a Scottish myth.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

These centuries old gardens have been restored to their 17th century condition.

This massive memorial commemorates those who died in the Manchester Arena bombing.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

This hidden art nouveau gem was designed by an architect in search of a national style.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A pair of stones embedded in an Edinburgh street memorialize one of the city's last public hangings.