The sculpture shows a water rat turning the world upside-down, landing an elephant on its head.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The longest and widest floating bridge in the world.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Follow the original medieval paths that wind through this intriguing section of the city.

Race through the maze, get your name on the sign.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Every equinox this Maya pyramid puts on a spooky ancient light show.

10,000 flowered plants bloom in the City of Roses.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Famously misunderstood wonder of the ancient world

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Look closely and you’ll notice that the color changes a third of the way up the tower.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.