California's largest steel arch bridge.

Will Geer's outdoor theater started as a mountain retreat for actors, musicians, and other artists who were blacklisted during the Red Scare.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

A medieval church built up to defend its village.

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

A misnamed well, with a deep dark past.

Atop this arch, during the 16th-century, a sermon was given to those suffering from plague.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

This monument depicts a harrowing event involving an escaped polar bear.

A free public golf course hides in plain sight in the heart of Scotland’s capital.

This sculpture commemorates Edinburgh's sister city and their respective celebrity dogs.

This vintage gem is one of the oldest surviving purpose-built movie palaces in Scotland.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

This early version of the guillotine was used to execute the man responsible for its construction.

The most loyal of little dogs, or a Victorian era publicity stunt?

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This tiny little cave was said to have been a refuge for a saint with a glowing arm.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A 18th century graveyard and its astonishing cortege of macabre iconography.

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

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.