This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

The collection of ceremonial and cultural objects spans many countries and hundreds of years.

Two dozen rescued bears roam (mostly) free at the largest bear ranch in the U.S.

This freshwater spring fills with 10,000 gallons of water per minute.

Take a drunken tour inside the world's largest known geode.

This sprawling bookstore spans four floors and has more than a million books in stock.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

An enormous, inside-out glass globe built in 1935.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Most-visited and most-photographed slot canyon in the American Southwest.

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

Rippling sand dunes frozen in the Arizona rock.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

The world's largest reflecting pool is just two centimeters deep.

This hidden garden boasts amazing views of Lyon.