This impressive working clock made of 16,000 plants changes its flowers twice a year.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

There aren't too many operational funiculars around, but Pittsburgh has two!

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A local prank turned town icon.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Rare recess caves fill this unbelievably beautiful Ohio park.

The "Seinfeld" diner.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

A quirky collection of outsider art made from automobile parts.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Along this wire fence, travelers have been leaving a particular memento since 2012.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

A sulfuric martian landscape that looks far better than it smells.

This replica Viking village was created for a film that was never shot and is now open to visitors.

This elegant arc of a waterfall marks a religious turning point.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.