At the center of London’s oldest roundabout stands an obelisk that was erected in 1771, but spent several decades elsewhere.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

How did a fuel storage container become one of the most famous sights in the sporting world of cricket?

Rare karst landscape eroded from a flat seabed.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

A centuries-old house, once part of the wall of Granada, sports musket barrels from the battlements which allude to its original owner.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A 16th-century Andalusian palace.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

An eerie collection of the surviving structures from a past celebration of the future.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

A unique underground structure dating back to the 1st century BC.

This ancient theater was once the home of fierce gladiatorial battles.

A strange anthropomorphic stele with a mysterious inscription that has never been deciphered.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

England's most notorious suicide spot.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

The world's oldest model village.