Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

This winding road through an Italian canyon may be the most scenic drive in the world.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

Mysterious tombstones thought to be remnants of Atlantis.

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

It's believed that these columns marked the end of the Via Appia.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

In one of the world's smallest countries, a royal's personal winery is open to the public.

This artistic fountain display pays homage to this area's theatrical history.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The bears of Bern have been a city highlight for over 500 years.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

The world's largest piece of copyrighted artwork.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Ice cream stand, snack bar, and time capsule of milk conveyance.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.