The seawater playground of gilded-era San Francisco burned to the ground in 1966.

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

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

A Hawaiian stairway to heaven—that you can't climb.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

Read a book next to a Midtown waterfall.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A beautiful geyser under environmental threat.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

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

A psychedelic labyrinth on the San Francisco bay.

Site of a former hidden treehouse in New Orleans.

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

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