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

The first evidence of some of the Earth's earliest life was found in this fossilized undersea grotto.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

This small, unassuming street is now a canvas for color and creativity.

The remnants of a creative early method of wildfire prevention.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

One sculptor's lifelong war game is the largest and longest running miniature campaign in history.

A hidden bar inside an ad agency has a deliberately misleading name, so employees can stay late under pretext of paperwork.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

This historic national park is covered in the stunning ruins of red rock pueblos.

The largest known open fault in the United States is basically a giant natural refrigerator.

This small, hidden cove is home to abandoned boats.

The only surviving sidewalk clock in Brooklyn.

A prized globe signed by Amelia Earhart and Charles Lindbergh sits in the Brooklyn office of the American Geographical Society.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

A big shiny gin and whiskey distillery in Sunset Park.

Collect holy water from a Bronx grotto.

A room hidden behind a swinging shelf in the children's section.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.