One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Staves, storm-calling, and of course, necropants.

Rising from the sea like a stone monster.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

This knick-knack-covered house (complete with a matching van) is a charming oddity in the middle of a modest downtown neighborhood.

This urban oasis is a marvelous meld of music and landscape architecture.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

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

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

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

“Invented in Key West, Perfected in Brooklyn."

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

The first and only carousel with a lineup entirely of insects.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Abandoned power station once home to a squatter community, now being developed into an arts center.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

The oldest surviving synagogue in New York City is now a soaring art space.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Nondescript elevator doors open to reveal a stunning, surreal world.