Only known mainland rookery of the threatened Stellar sea lion.

Elevated freight railway turned wildly successful urban park.

A natural sandstone bridge hidden in the Sewanee forest.

While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This hollow steel globe is the second-largest in the world.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Built following the War of 1812, this fort has withstood hurricanes for centuries.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

A local landmark with generations of spraypainted messages, and more being added each day.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

See massive fossils that are over 200 million years old in northeastern Arizona.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A giant Troll lurks under one of Seattle's oldest bridges.

The second-tallest water tower shaped like a peach in the American South.

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

One person's lost luggage is another person's treasure.