The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

A trash dump made beautiful by nature's power.

The unusual burial monument of Arizona's first governor.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

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

A stone wall that mysteriously moved three feet from its foundation.

Though they've since been renamed, these two streets hint at Dublin's darker days.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

The ancient tomb acts as a calendar that keeps perfect time.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The blinking light atop the iconic landmark has been sending secret messages for decades.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

Despite being a perfectly pleasant place to be, Loyalton can't seem to attract any visitors.

Pizza joint known for labor-inducing salad dressing.

Honoring the famed folktale author, this California museum looks like it belongs in the Black Forest.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

International delicatessen has been owned and operated by the same family for more than 110 years.

The illuminating collection of L.A. street lights is run by the city and only opens one day per month.

This infamous prison has a store where you can buy goods crafted by incarcerated people.