A one-of-a-kind collection of a unique medium.

A bizarre house filled with an astounding array of collections.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

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

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A psychedelic labyrinth on the San Francisco bay.

A magical place that lets you play in and explore the world of Studio Ghibli.

An exquisite tunnel of cascading flowers.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

The U.S. Air Force has an anti-satellite laser weapon.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

A half-acre utopia in the New Mexico desert features a graveyard, a game of horseshoes, a library, and a mailbox.

The winter home of thousands of beautiful snow geese and sandhill cranes.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.