The world's largest fire hydrant is supposedly tornado-proof.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The first artificial white water river course in North America cuts right through an Indiana city.

400 million years of erosion shaped these fascinating seaside caves, which made an appearance on 'Game of Thrones.'

Legends say this red sandstone monolith and the dozens of smaller boulders that surround it were once a coven of witches—before a Scottish wizard turned them all to stone.

This mysterious chalk figure of a horse has been recreated and restored for more than a century.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

60 feet of towering steel balances gracefully.

A second generation sun-powered marvel lights up the night.

The exterior of this home was used for the hit television show, The Brady Bunch.

Opened as part of the New Deal, the training facility now features World War II-era structures and a pylon that once stood at the World Trade Center.

A dwindling menagerie of anthropomorphic oil derrick animals still dot the barren California landscape.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

The Laureates here get something even more coveted than a Nobel Prize: free parking for life.

Nose around a unique collection of more than 300 natural aromas used to craft perfume fragrances.

A storybook European village in Berkeley.