The artwork commemorates the many ways 20th-century people perished while on the clock.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

Rare and gorgeous birds abound in this protected wildlife sanctuary.

After this former brothel closed, its interior remained almost frozen in time.

It was once used as a classroom to teach mining skills to local high school students.

This boulder with a 200-word legal dedication to God has remained hidden in the woods for over 150 years.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

This candy-colored storybook village originated as a 19th-century Methodist campground.

Last church of this militaristic WWII style.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

A monument marks where a convent was burned by an anti-Catholic mob in 1834.

Like stepping into a spooky fairy-tale, this shop carries the dark ideas of artists and other makers.

Beautiful steampunk ghosts of early Massachusetts.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

An enormous, inside-out glass globe built in 1935.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

A historic custom house with ties to George Washington is now a shrine to local nautical history.

In a town that's had a whole lot of giant chairs this one still stands tall, just not the tallest.

On a side street near the interstate is the building where the famous anarchist once owned an ice cream parlor.

Once a kitschy symbol for a gift shop, this 38-foot seahorse is now a staple roadside attraction.