Inside a state forest, the forgotten remains of a Cold War defensive installation.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

One of America's first spies started out as a teacher in this little red one-room schoolhouse.

An abandoned 146-acre summer resort slowly being reclaimed by nature.

The Connecticut village named for its subterranean thunder.

This picturesque Victorian ghost town was once a thriving mill community.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

An abandoned Victorian-era mill in the middle of modern Manchester.

A former copper mine which became a truly unsuccessful prison.

Decades before the Salem Witch Trials, two Connecticut women were executed for alleged witchcraft.

Memorial to one of the most fatal fires in both circus and U.S. history.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

The former location of a platform that allowed passengers to safely wait for the trolley.

A wunderkammer hidden on the top floor of the Hartford statehouse.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

An actual piece of the Moon, brought down to Earth by Apollo 15.

An abandoned gun-funded 19th century utopia.

A tribute to the truly loyal dog who waited outside a hospital for his owner to come back.

Journey inside the bowels of this sperm whale sculpture.

These etchings reveal the history of a long-gone quarantine site.

The final resting place of one member of the Amistad slave revolt who never made it back home.

An abandoned Depression-era zoo hidden just off the highway.

A seasonal movie monster museum featuring wax creations by a relative of one of the original Universal Studios monsters.