Every autumn, this hillside is ablaze with red summer cypress.

A beautiful geyser under environmental threat.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

Rising from the sea like a stone monster.

Towering basalt columns, a creation of fire and ice.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

An Australian lake whose pink hue defies scientific explanation.

Its buzzing collection honors vibrator history.

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

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

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

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

Paris' linguistic guide to the international language of, yes, love.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The only theatre in the world constructed specifically for sound movement.

A semi-scholarly approach to sex.

A winding path built in secret on the edge of the continent.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

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.

Hot springs monkey spa in the middle of Hell's Valley.