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

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

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

Five candy-colored villages on the Italian Riviera.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Fortified medieval tower house with lovely roof garden.

A little sculpture with a large wardrobe.

When you're a great Russian Tsar, even your vomit gets a statue.

Meet the bronze beloved pet to a family of famous peeing statues.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

A Viking-style brewpub named for a Norse sea giant, in the heart of fjord country.

An artist's mausoleum with a haunting echo.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Famously misunderstood wonder of the ancient world

The first archaeological site discovered by aerial photography.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

These upturned herring boats make nifty storage sheds for fishing goods.

“It has nae lugs!”

This modern labyrinth lies in the shadow of a ruined medieval castle.

An optical Illusion once believed to be an electrical phenomenon.

A red-brick beacon stands against the tempestuous Atlantic, on the windiest site in the United Kingdom.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.