The homestead of American patriot John Adams.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The largest arcade museum in the world chronicles the golden age of video games which ended promptly in 1987.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

It was once the base for a series of domestic terror attacks.

A small museum full of giant effigies of Bali's demons and monsters.

Collection dedicated to brands, packaging and advertising.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Traveling collection of amazing automata.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

The personal library of the founder of modern neurology is open to visitors.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

This Parisian café sticks almost exclusively to an ethos of reuse.

A museum of magic with a Sadist past.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A haunting collection of the vanished and disappearing natural world.

Memorial to a beloved puppeteer as well as all street performers.

This is the house that spite built.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

Commonly acknowledged as the only public monument to the Devil himself.