A century-old network of freight tunnels underneath the city's historic business district.

A speakeasy takes on Chicago's drinking culture.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

This historic Benedictine monastery brews a booze so toxic that it has often been blamed almost singularly for Scottish hooliganism.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

This painted wooden sculpture depicts the characters of a popular Devon folk song.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

The best place in the world to buy tinned fish.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Decrepit Victorian public lift is a white-knuckle ride.

Space-age monument to an early 20th-century uprising.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.