The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

This unique zoo is the only place in the world where you can see all 15 species of crane.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

The Bong-area park police have asked visitors to please, stop stealing the signs.

A roadside spring pooling in an old bathtub where anyone can stop and sip.

The highest point in Wisconsin is capped by two towers that are not as mythic as Tolkien's but provide much better views.

Homemade outdoor church and sculpture garden decorated with glass shards.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A snapshot of the city's fascinating voodoo culture.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

A museum dedicated to a sea that should have never been.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.