A 60-room castle constructed by a horse-racing heir.

Mysterious stone tower featured in many alternative histories of the New World.

The final resting place of New England's last "vampire."

This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

A collection of full-size movie monsters opened to the public.

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

A museum dedicated exclusively to the lore and history of ouija boards.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

A public art jibe at one of the United States’ oldest and longest-serving senators.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

Dedicated to the victims of one of the deadliest hurricanes to strike the United States in recorded history.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

The ruins of this ancient fortification wall sit in the middle of a quiet, residential intersection.

The Great Fire of London and the regulation of one-way streets both started in this alley.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

The reconstruction of this prominent building fulfilled a long-written command.