Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

Biblical beasts and endangered animal preservation come together in this Israeli zoo.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The place where World War I began.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

The national park was once a plantation estate.

Art deco landmark on the outskirts of Washington, D.C.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

The only remaining Jewish congregation in Greenpoint.

Neoclassical bank designed by NY architects Helmle & Huberty.

A 120-year oil leak slowly unleashes more gallons of oil than the Exxon/Mobil disaster.