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

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

This parking garage was the site of what was - at the time - the largest cash robbery in history.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

Supposed Massachusetts Grave of a pre-Columbus Knight Templar.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

A massive volcanic plug is now a protected area that hosts a number of bird species.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

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

An architecturally unique lighthouse that had to be lifted up and moved to avoid falling in the sea.

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

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

This former shopping center now acts as the eccentric lair of the Venezuelan secret police and their shadow prison.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

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

Steinbeck's old stomping grounds, immortalized in Cannery Row.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

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

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

A lone gunner's station is all that remains of a replica Spanish Fort in Florida.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.