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

A small flooded ghost town with a few scattered structures remaining.

Outsider art meets paleontology at this roadside reptile repository.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The largest permanent Monopoly board makes one of the longest games even bigger.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The "Seinfeld" diner.

Moonbows over Kentucky.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

A popular swimming hole that hides one of America's most deadly diving spots.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A clear blue swimming hole with hidden caves, still unexplored.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Where manatees are the snowbird vacationers in these balmy Florida springs.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Tiki luxury on Nob Hill.

Quite simply the largest tree in the world (by volume).

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.