This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

A giant 400-acre preserve in North Florida for displaced wolves.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

An underwater city for the dead.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

"Mock all and sundry things, but leave the saints alone."

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

This Art Deco theater is the last remaining opera house in the “little Broadway of the North.”

The steel hull of a wrecked tug rests on Lobster Cove on Monhegan Island’s rocky southeastern shore.

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

A beautiful, water-filled quarry that has become a popular haunt for swimmers and artists.

A restored historic movie theater is the perfect place for a regional film archive.

This architectural onion has an original 1930's Jerry O'Mahony dining car at its core.

This museum on a college campus pays tribute to the Arctic and to two explorer alumni.

This World's Fair showpiece was built in Chicago, but shipped to Maine.

Stone monument honoring a town founder has a witch-boot shaped stain and a curse to go with it.

The second-oldest garden cemetery in the U.S. was also a college brainstorm spot of Stephen King.