A museum where visitors can learn about greyhounds and (more importantly) pet them.

This unusually circular centenarian barn became a Route 66 icon.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

This historic folk art garden contains a nightmare tower that claims to be the world's largest concrete totem pole.

This former mining town was named the most toxic town in America.

Nature's biggest mammal swims in landlocked Oklahoma.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

An unusual round church in London with a Templar past.

A restaurant and observation deck built in a unique broadcasting antenna.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A sharp sculpture made of thousands of pieces of jagged glass.

Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.

What once sat in the world’s spotlight is today a largely disused ghost complex.

An abandoned Byzantine fortress and notorious prison.

Where commuters walk through remnants of an ancient Greek necropolis.

An autonomous republic of Orthodox monks.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.