Rainbow-hued local gem in Venice.

Olfactory delights in San Francisco's Botanical Gardens.

A beautiful geyser under environmental threat.

A museum befitting the city responsible for supplying the majority of the world's LSD.

The first declared National Monument in the United States.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A beautiful 62-acre Catholic shrine and botanical garden.

A hand-built folk art installation covered with messages of God's love.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Stroll through a wonderland of stupendous moss-covered trees.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

An emerald-green grotto just a short trip from Austin.

The rocks in this arid basin leave trails of movement behind them.

The legendary building that needed ghostly approval before being built.

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

Nevada's largest cactus collection stands outside a candy mogul's small factory.

The longest living non-clonal organisms on Earth.

A huge musical instrument played by the ocean.