One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

When flour explodes, it's not a pretty sight.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Enter the Forest of the Elves.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

A natural formation that resembles a camel resting in the New Mexico desert.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

A clear blue swimming hole with hidden caves, still unexplored.

This working class sculpture pounds his hammer all the livelong day.

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

The first park built over a freeway is a brutalist masterwork.

This former coal gasification plant found a curious second life as a popular public park.

A colorful architectural gem in Seattle's uniquely modern Central Library.

A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”