In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

The world's largest piece of copyrighted artwork.

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

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

Ice cream stand, snack bar, and time capsule of milk conveyance.

The site of Paul Revere's historic two lantern warning.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

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

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The oldest continuously-operated inn in the United States, once owned by Henry Ford.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Ruins of a Carnegie family mansion on Cumberland Island.

Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

A cable-suspension footbridge that hangs high above the Mill River.

Small rustic cabin nested in the mountains of Killington, Vermont.

This path is named for a mythical half-boar, half-deer creature that once roamed the Green Mountains.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

America's oldest archaeological site or a muddled case of wishful thinking.

The remains of a small medieval chapel mark the legendary birthplace of the patron saint of Wales.

The highest point in Connecticut was incorrectly memorialized before surveyors discovered the actual spot.

A popular rock that acted as a waymarker for American pioneers.

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.