This unusual subway stop was originally a real estate office.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

The world’s first museum dedicated to exploring human rights unleashed a wave of controversy.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Rows of stone statues are dressed up to mourn children that are lost before birth.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

The tiniest little stage in New York.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The "Seinfeld" diner.

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

This block in downtown Brooklyn was a hotbed of antislavery activism along the Underground Railroad.

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

New York's southernmost subway station is whimsically wavy.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

The pioneering photographer's prints are immortalized inside her childhood home.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.