A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Cat art as far as the eye can see.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Stockholm's deepest subway station is also a stunning ecological wonder.

Sweden's "good old days" painstakingly re-created in a model village.

The world's largest model of our planetary system.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Largest private bird collection in Iceland, formed from a tragic accident.

A modern mechanical planetary system, part of a 10,000 year clock.

This print shop boasts one of the largest pinball arcades in San Francisco.

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

These banned cigarette vending machines now sell little pieces of pocket-sized art.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Two massive rock outcroppings on the Oregon coastline.

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

Surprisingly Delicious Asian-Style Hot Dogs.

At least 14 twice-retired ships were sunk to make a lovely rusting breakwater in Comox Harbour.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

The largest of London's subterranean rivers and once a mad, bad center of London life.

English antique dealers with a taste for the unusual.