The oldest living tree in Manhattan comes shrouded in sinister legend.

The first piece of public art dedicated to LGBT rights.

A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

The largest and, arguably, most scenic fortress in Bhutan.

An unsanctioned shrine that sprung up outside the late singer's home is causing a stir in London's Highgate neighborhood.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The cedar tree in Highgate Cemetery earned its title by accident.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

This London plaque marks the spot where David Bowie's famous alien made his debut.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

One man’s passion for gas stations is on display along the Rio Grande in northern New Mexico.

A multi-storied adobe complex has been inhabited for more than a thousand years.

These aggressively sustainable art homes look like something out of 1970's science fiction.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This popular pilgrimage site offers a hole filled with holy healing dirt.