British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Eat the ultimate iteration of Portugal's most beloved pastry.

The world's oldest bookshop still in operation.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

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

This small-town pizzeria won the Hollywood lottery.

Abandoned Coast Artillery fort now serves as a graffiti canvas and sightseeing vantage point.

Pluto is still considered a planet in Ithaca, New York.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The only surviving fragment of the lost Narragansett Pier Casino.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

What remains of the summer palace of King Kamehameha III.

Watch the newest land on the planet form before your eyes.

This black shoreline is made up of exploded lava particles.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.