A lush green oasis in the middle of Chicago.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Elevated freight railway turned wildly successful urban park.

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

A bizarre house filled with an astounding array of collections.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Ever wanted to can Spam?

A fitting attraction for the corn capital of the world.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Opened in 1956, the first modern indoor shopping mall in the world was inspired by the shopping arcades found in European cities.

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

This old residential building was once the largest flour mill in the world.

The only arched bridge made of stone on the entire Mississippi River.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

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

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.