Dictionary Johnson’s favorite feline.

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.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

The famous animator's private station house and man-cave was the birthplace of imagineering.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

Mysterious 500-year-old tapestries depict a unicorn hunt.

More gold than anywhere else, ever.

A hands-on traveling collection of the innovative devices of yesteryear.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

The last street in Pittsburgh that's paved with wood.

There aren't too many operational funiculars around, but Pittsburgh has two!

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A semi-scholarly approach to sex.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

This glamorous old building is said to have inspired the Tower of Terror.

Historic funicular railway, believed to be the shortest railroad in the world.

Megachurch turned Catholic church comprised of 10,000 glass panes.

An unexpected and peaceful oasis on a hillside.

America's most famous piece of self-built architecture.

In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.

A kaleidoscopic warehouse-maze of handmade neon signs.