An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

An abandoned amusement park based on the popular 1940s Red Ryder comic strip.

This high desert botanical garden is a unique display of Northern New Mexico's geology.

A sprawling collection of over 106,000 toys from around the world.

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

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

Taos Pueblo recipes, foraged ingredients, and outdoor ovens define the menu at this eatery.

Reproductions of nine banned oil paintings coyly hidden behind a curtain in a New Mexico conference room.

This sundial indicates the time based on where you stand within it.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

A network of concealed passageways lies within a busy London Underground station.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A hands-off space for graffiti artists to hone and display their skills.

A tongue-in-cheek arcade where the games are based on everyday life.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Banksy gives themself artistic license with this piece of London street art.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This South London cemetery holds the remains of more than 15,000 people.