A 20th-century picture show in 3-D.

The unusual patterns in this rock formation result from two distinct modes of weathering.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."

Rising from the sea like a stone monster.

The metal leaves on this tree are engraved with the names of Holocaust victims.

This artificial archipelago was supposed to resemble a map of the world.

The world-record holder for the longest bridge stretching continuously over water.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

This section of the Kennet and Avon Canal has been designated the same level of heritage protection as Stonehenge.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

A 2,000-ton rock resting in a state of a delicate balance.

Many Hindus make the long pilgrimage to this holy city to have their remains burned on the banks of the Ganges River.

Now home to a drinking establishment, this building has a macabre history.

These fantastically named natural pools look like something out of a Scottish myth.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Tubing through a cave lit with glowworms is a magical underground experience.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

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

Get up close and personal with these majestic fish.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.