One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

This grand gothic brewery has been pumping out suds for over a hundred years.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A whimsical village of unique treehouses resides in a Washington forest.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

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

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

All that's left of the quintessential "cabin in the woods."

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

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

A heavenly experience, right here on Terra Firma.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The angel of death appears to weep black tears at this grave marker.

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

One part antique store, one part curiosities hodge-podge.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

The world's longest known cave system.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Tiki luxury on Nob Hill.