Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

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

Volunteer-run library dedicated to exploring five decades of activism history.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

The world's oldest bookshop still in operation.

Houses are tucked between, on, and underneath giant boulders.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A unique collection of Science Fiction, Fantasy, and everything in-between.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The headquarters in Salem doubles as an occult art gallery.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

This grand mansion has starred in everything from Bones to Buffy.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.