This spectacular track has run continuously since 1882.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

An important piece of history from mankind's journey to the moon sits in the lobby of a government science lab.

Home of a French nobleman's short-lived attempt at raising cattle in the Badlands of North Dakota.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

The secluded beach getaway from Wes Anderson's dreamy summer romance.

This remote desert watering hole has a connection to a curious chapter of American history.

The largest and most well-preserved petroglyph site in the Verde Valley.

The graffiti-covered ruins of an abandoned trading post in the middle of Navajo Nation.

This historic patch of real estate offers a glimpse of colonial Boston.

Alexander Hamilton’s creation caused quite a bit of controversy.

This beloved roadside attraction welcomes visitors with his signature neon smile.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

More than 500 unique and specially designed cases collected by D.C.'s "Harmonica Case Man."

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

This high desert botanical garden is a unique display of Northern New Mexico's geology.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

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

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

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

This unassuming passageway played a key role in one of the most important events in U.S. history.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

The 28,000-year-old specimen is remarkably intact.