A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

The only substantial part of Nazi Germany's formidable defensive line through Northern Italy that survives today, largely intact.

The naturally mummified body of a peasant girl saint.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Fortified medieval tower house with lovely roof garden.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

In which a local geological marvel becomes a quaint roadside attraction.

Yo, Adrian!

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

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.

The oldest farmer's market in America is so ancient it was approved by the King of England.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A toxic ghost town sitting atop a massive coal fire.

The world’s first penitentiary, meant to be humane, drove men insane.