Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

A sculpture for the sun and stars, created by Nancy Holt.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

Caves famous for the dragon-slaying saint who lived there.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

A former utopian healing center created by a huckster and built by derelicts.

Abandoned medieval hill town.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

The first green space constructed on an elevated viaduct.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Mysterious glowing orbs float through the desert night.

Roman ruins top white travertine terraces formed by ancient hot springs.

Five candy-colored villages on the Italian Riviera.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An obscure waterfall that looks like something out of a fantasy novel.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Extraordinary sculpture garden created by an eccentric English poet.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.