This enchanting green space houses a labyrinth lined with toxic plants.

Made up of 3,200 recycled glass bottles, this tree pays homage to Asturia's love of cider.

This modern sculpture looks out over the sea and amplifies sound from the inside.

The closed and crumbling Francoist luxury resort for workers is still full of life—for now.

This Bronze Age man spent millennia buried in a mine, giving his bones an eerie hue.

It's believed these prehistoric individuals were the victims of cannibalism.

A statue honoring the tragic heroine of a Spanish literary masterpiece.

This secluded ruin was once a home for exotic plants.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

An annual extravaganza of Broadway theater memorabilia.

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

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

An 1883 schoolhouse now home to collective of artists.

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

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

An artist's cute bronze subway sculptures belie his violent artistic past.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Harlem park dedicated to compulsive hoarders killed by their own junk.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

A terrific purveyor of natural history objects and curios.

A unique collection of figures perform down the facade of the Gene Frankel Theatre.

In this beloved beach town, a secret seafood haven lies tucked behind a car wash.