This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

One of the best places in Florida to spot rare, carnivorous pitcher plants.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

For 60 years, skiers have calmed their nerves with cocktails hidden along these slopes.

Taos Pueblo recipes, foraged ingredients, and outdoor ovens define the menu at this eatery.

A multi-storied adobe complex has been inhabited for more than a thousand years.

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Queen Anne style apartment house built in 1886.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

This restored farmhouse is a time capsule of a 19th-century Colorado homestead.

A research lab and hands-on museum where visitors can experiment with retro technology.

Come for the waffles, stay for more waffles.