After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

It's a pretty creepy lock-up.

A monument celebrating the idea of reaching inaccessible places.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A haunted hill that supposedly defied gravity.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

An unusual manor of stunning beauty, born out of a crippling disease.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

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.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

The largest body of water in Massachusetts annihilated four small towns just to slake Boston's thirst.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This little-known rival to the Library of Congress houses one of the largest collections of pre-1876 American books, newspapers, and manuscripts.

The proud hometown of an American legend has honored their favorite son with what seems to be a gravestone.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

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

Historic Hull Street was actually the first street with a proper name in the Boston area.

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.