The highest point in Maryland is only accessible by hiking through another state.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

This granite monument at the site of an ill-conceived tourist attraction is built from the same stone as the Mormon Temple.

The highest point in Florida is still the lowest high point in the country.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

The wild west is still alive and well at this authentic mining town watering hole.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

Water of undetermined depth has attracted rare fish and cult leaders alike.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Bits and pieces from the ill-fated Donner Party's winter cabins.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The longest living non-clonal organisms on Earth.

The drama of nature in full effect in this Nevada State Park.

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

Eons ago, a rushing lava river formed this pristine passage through solid rock.

An artificial crater field that trained astronauts for lunar exploration.