A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

A collection of bite-sized buildings creates a magical mini village in the Pennsylvania mountains.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

The dishes at this restaurant by The Sioux Chef celebrate indigenous heritage.

This restaurant features Native American foods from across the country.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

The soaring gondola lines form the longest aerial cable car system in the world.

An ingenious solution to a tricky engineering problem, this spiraling bridge takes drivers for a dizzying spin.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

Gold Rush-era tombstones line the park's paths.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

A little Lego easter egg is hidden underwater in the Boston Tea Party tableau at Miniland.

Century-old shop, specializing in Occult products.

Step into a pastel time capsule where candy is truly dandy.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

A daily replay of the experiment that proved the rotation of the Earth.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Dr Barnes' $25 billion private collection of art and arboretum.