Abandoned Italianate architecture on the coast of Maine.

Its unique collection details the history of the state's svelte railroads.

The only remaining historic maritime signal station in the United States.

The remains of a large iron mill that once stood in the remote woods of northern Maine.

The debris forms a solemn memorial to those who died in a 1963 accident.

This massive solar system model is sprawled out across Maine's suburban wilderness.

A monument marks the beginning of the longest north-south road in the United States.

A small park commemorates the departure of the first-ever successful transatlantic balloon voyage.

Steam engines and conveyor belts are remnants of a genius system left in the middle of the Maine woods.

The “Grand Canyon of Maine” is a three-mile gorge full of striking geological features.

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

A New England ghost town features a trail of boulders etched with intriguing life lessons.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

Exact replica of the ancient monument, but much, much lighter.

These hooded graves are the only of their kind in the United States.

A toxic ghost town sitting atop a massive coal fire.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.