Abandoned Italianate architecture on the coast of Maine.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

This ominously named New Jersey street seems to be attracting over-the-top legends of its own making.

One of the first commercially successful anthracite-powered iron-making operations in North America.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

Outsider Art Community.

A Saint Nicholas-themed ghost town in the Mojave desert.

During World War II this was the site of an "honor camp" used as a prison for draft dodgers, Native American conscientious objectors, and Japanese-Americans—including a man who brought his case against the camp to the Supreme Court.

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

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

This Native American settlement dates back to the Pueblo II period.

Petroglyphs, bird watching, and a 100-year-old Ranch in one location.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

The remnants of a creative early method of wildfire prevention.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

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

The stone-covered graves lie within the ruins of an Old West ghost town.