Read between the lines of the subway map to find the hidden abandoned Civil War fort.

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

Prove you deserve to be fed by Kenny Shopsin.

Unlock the secrets of the conjuring arts.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A simple Colonial home with a past haunted by death and madness.

The scars of World War II are preserved on its walls.

One man's personal kunstkammer, museum and shop.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

The spectacular history of spectacles on display.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Cat art as far as the eye can see.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

Abstract dinosaur models in London.

The television series' iconic giant foot was borrowed from this classical painting.

The final resting place to 300 Victorian-era pets hides inside the city park.

Banksy gives themself artistic license with this piece of London street art.

Two mermen, eternally spitting into each other's mouths.