Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

An abandoned church gets a second life as a massive beer hall and event space.

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

A museum dedicated to exhibiting remarkable outsider art.

This translucent sculpture represents a quintessential component of New York City's skyline.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

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

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

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

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

Berlin's old airport.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

A famed data visualizer's personal sculpture garden is a landscape of modern and megalithic wonders.

This quirky local sculpture is quite literally a fish out of water.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

This tiny home was originally a narrow alleyway.