The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

New Hampshire's first neighborhood is now preserved as a historic village with live action role players.

Celebrate the history of the lucky chimney sweep.

In 1977, an eccentric book lover formed a micronation for book lovers.

The only Leonardo Da Vinci painting in the Western Hemisphere.

The revival of a classic Art Deco theater.

An underground blaze turned this village into a ghost town.

A eight-foot-tall statue resides in the heart of Pennsylvania anthracite coal country.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

Apartment complexes built into huge repurposed natural gas tanks.

Physicist’s epitaph provides final confirmation to a career of turmoil.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

A stone marker commemorating the first time sound was transmitted over wires.

This former insane asylum now holds a pathological anatomy museum.

One of the best collections of wax anatomical models in the world.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Double spiral staircases are not unheard of, but they are very rare.

A set of outdoor stairs named in honor of a famous Austrian artist.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

Op-art architecture designed for happiness.