A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The world's only museum devoted to the wonders of fluorescence.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

On Japan's Tashirojima Island, cats are king.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An exquisite tunnel of cascading flowers.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A kaleidoscopic warehouse-maze of handmade neon signs.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

An emerald-green grotto just a short trip from Austin.

An enormous, inside-out glass globe built in 1935.