This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

This enigmatic building features numerous architectural styles.

Tucked away atop a quaint Alabama pharmacy is this tiny display of antique medical tools.

This museum chronicles the history of a leprosy quarantine hospital that then became a refuge.

A health museum containing a 27’’½-foot intestine.

This collection of bronze hands comes from astronauts, presidents, baseball greats, and more.

A public art project to commemorate a tumultuous period in Derby's history.

You can dig up your own crystals in the quartz capital of the world.

Inside this small brick bungalow is a collection of toys intended for the afterlife.

A waterfall and cave near Arroyo Seco that inspired the writings of D. H. Lawrence, Willa Cather, and Mabel Dodge Luhan.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Once owned by the largest employer in Colorado, these ovens have been abandoned for over a century.

Northern Kentucky’s very own Notre Dame showcases intricate stained glass and the bones of saints.

A former infectious disease laboratory chronicles how tuberculosis shaped a village nestled in the Adirondacks.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Rustic natural hot springs in the deciduous rain forest.

Inmates dig the graves at the largest prison cemetery in the U.S., the final resting place of both cowboys and Indians.

One man's unrequited love stands in a glass box forever.

A high-octane shrine to the greatest Texans who ever lived.

Continuing the tradition of the dime museum in style.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A small island hides in plain sight on Austin's Lady Bird Lake.