Scars from the English Civil War mar this medieval sanctuary.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

60 feet of towering steel balances gracefully.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

The words of the neighborhood's most famous poets adorn four concrete walls.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Only hotel where you can legally launder money.

A man-made island in scenic San Francisco Bay.

This turn of the century masterpiece has a mysterious goaty interloper.

Golden Gate Park's historic collection of plants.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The longest and widest floating bridge in the world.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A nostalgic bibliographic gem.

Look closely and you’ll notice that the color changes a third of the way up the tower.

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

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

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

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

The Boston square dedicated to the dark poet who was born nearby.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.