An oddity of a bygone era that stills functions today.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

Visit the remains of a notorious Victorian-era correctional facility.

Carved into a towering rock mountain in Al Ula, this once served as a religious and political center in Hegra.

The city walls of Salé lead to the ruins of this seaside "bastion of tears."

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

This site was once the religious, cultural, and trade center of Sri Lanka.

A building claimed to be London’s smallest house has an obscure history.

These long, lean figures pay tribute to the daring feats of the historical raftsmen of Catalonia.

Mosaics, storks, and brothels—this ancient city has it all.

This sprawling, Brutalist estate feels like a city within a city.

Soaring over the Niagara Whirlpool since 1916.

The Painted Ladies of Ontario aren’t your average beach homes.

Often referred to as one of the most haunted places in Morocco.

Inaugurated three times, this tower offers some of the best views of Madrid.

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

Shrapnel scars and bullet holes from the Spanish Civil War can still be seen in this monument to Spanish doctor Federico Rubio.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A controversial art piece that harkens back to local folklore.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

Designed in the Romanesque style, this structure was once a fortress monastery.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.