Places Gray Wants to Go

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

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

San Francisco's newly reopened hands-on science museum.

This frequently-photographed waterfall takes only a short hike to visit.

An underwater city for the dead.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Where beautiful signs live on forever.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

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

One of only two commuter aerial tramways in the United States.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

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

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

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

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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

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

Olfactory delights in San Francisco's Botanical Gardens.

This abandoned amusement park was built on a site with a dark history.