The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Copenhagen's celebrated theme park and gardens.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

Antiques by the Bay.

A 90-acre park on former landfill that hosts an annual kite festival.

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

An vast warehouse of everyday treasures in Berkeley, CA.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A private home built to resemble the shape of a microscopic creature.

A modern zoetrope on the New York City subway.

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

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

An encyclopedic collection of mammal penises.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

An eerie, derelict amusement park in Berlin.

The most visited, and possibly most controversial, museum in Germany.

Famously misunderstood wonder of the ancient world