The remains of this visionary community can still be found much as it was a century ago.

The ill-fated plan to reroute the Mississippi so that Union ships could bypass Confederate fortifications on the river bend.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

The second oldest continuously operating bar in Louisiana.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The final resting place of New Orleans' most famous voodoo priestess.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

Plymouth's huge yet little-known memorial to the Pilgrims.

Built to bless whalers before their voyages, this Massachusetts church now features a ship-shaped pulpit.

The world's largest piece of copyrighted artwork.

The Cape Cod house that whaling built.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.