This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

This shrine to the patron saint of Alaska sits on a small tidal island and was built from the land’s own beach stones.

The grave of Mary Nasson is shrouded by witchy legends.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

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

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

The angel of death appears to weep black tears at this grave marker.

This network of conjoined cellars was riddled with traps and supposedly allowed the townspeople to pretend their homes were deserted.

Pennsylvanian mass grave and possibly mass murder.

An unsolved murder victim's grave which may or may not contain her body.

A strange mark in the stone fence of a cemetery fabled to have been made by the Devil himself.