Millions of numbers carved in glass represent the tattoos forced upon victims.

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

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

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

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

Impossibly life-like natural history models created out of glass by a father and son.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

The headquarters in Salem doubles as an occult art gallery.

A collection of the best toys ever made inside a museum devoted to play.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

A room hidden behind a swinging shelf in the children's section.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."

The largest guitar store in the world has been visited by some of music's all-time greats passing through upstate New York.

Dozens of houses in the Adirondack Mountains are reminders of a literal "cottage industry" to cure people of a deadly disease.

A building so large that it has its own weather.

The fifth-longest natural arch in the world, and the longest outside China.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A six-ton wedding present for the King of the Scots.

A remarkably well preserved tower dating all the way back to the Iron Age.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Bouncing, delightful, mechanical art at the MIT Museum.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.