This cave holds a surprisingly colorful variety of geological oddities.

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.

Around 100 sculptures from artists all over the world decorate the hiking trails surrounding this locale.

The childhood home of the meat inspector who would become the face of America.

A humble reminder to Bedford’s past sits hidden in plain sight.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

A historic and oft-filmed prison stands in a Chicago suburb.

This historic hotel invented the chocolate brownie.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The world-record holder for the longest bridge stretching continuously over water.

An ode to "The Queen of Appalachia."

This university transit system is a 1970s vision of the future.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

In which a local geological marvel becomes a quaint roadside attraction.

George Washington, Alexander Hamilton, and Benjamin Franklin all slept at this humble inn.

One of the world's oldest continually operating bookstores.

Mansion and shopping center used in the 1975 film "The Stepford Wives."

This small-town library was the first in the world to be entirely supported by taxation.

This New England drive-in was built to straddle the border between two states.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.