Mysterious rocks that ring musically when struck.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

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

This elaborate towering structure was once famed for its revolutionary height.

Elevated freight railway turned wildly successful urban park.

On a clear day, you can see all the way to the Virgin Islands from the top of this observation tower built in the 1960s.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The unbelievably opulent home built for an infamous newspaperman.

Oldest building in California still in use.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

This abandoned prison castle has become an imposing gallery of graffiti art.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.