The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Shop selling 500 flavors of soda has something for everyone.

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

America's most famous piece of self-built architecture.

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

World's first "penitentiary," meant to be humane, drove men insane.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A bit of retro transportation flair preserved in the world's largest department store.

New York's oldest and possibly grandest keeper of books.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

New York City's smallest piece of private property.

This massive subterranean fissure is known as the "underground Grand Canyon."

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

A lover's walk between hilltop towns, decorated with graffiti love notes.

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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Secret refuge and museum of the Duke of Florence.

The bomb-ravaged remains of of a colossal Neptune.

Five candy-colored villages on the Italian Riviera.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.