An 18-meter-long sarcophagus of a constantly growing dead prophet.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A quaint museum nestled in a former hub of Irish moss harvesting.

Centuries-old hoofprints and wagon tracks reveal themselves after a good winter storm.

A historic custom house with ties to George Washington is now a shrine to local nautical history.

A daybeacon pyramid is about all that's left of this island that is said to have sunk due to a pirate's curse.

This supermarket is suspended 25 feet above an interstate highway.

One of the largest public collection of historic armored and military vehicles in North America.

A Medieval Water Tower in the Heart of Massachusetts.

Last church of this militaristic WWII style.

It took 275 years and four burials to finally put the Mayflower’s most famous passenger to rest.

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

Civil War Fort on an island in the Boston Harbor.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

Three prestigious academic collections come together to create a world-class natural history museum.

The world's largest piece of copyrighted artwork.