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

Hill-like structures formed by glaciers and sandy spits of land.

Solar powered Spectacle Island features all-green facilities.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

This small shop walked so America could run on Dunkin'.

Eco-friendly island mansion.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

Unicorns, elephants, and bears, oh my!

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

This beautiful architectural gem was the first waste treatment facility in Boston.

The world's largest piece of copyrighted artwork.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Stolen goods adorn the organ at Old North Church.