A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

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

A near tragic event on this bridge helped inspire the classic film "It's a Wonderful Life."

What remains of the simple red brick chapel where the women's rights movement began.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

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

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

More than a century old, this trading post resides in the Navajo Nation.

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

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

Ancient pueblos built into the base of a natural canyon wall.

A motel dedicated to Southwestern nostalgia.

This memorial includes fragments from one of the greatest tragedies in United States history.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Washington's iconic carousel has a nice piece of Civil Rights history.