This ancient Spanish castle sits high upon a hilltop.

The oldest Roman lighthouse still in use.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

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

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

A charming Spanish village sits atop this natural limestone overpass.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

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

Village situated on a narrow volcanic escarpment.

This house's itty bitty size means no humans allowed.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Bacteria and algae give the salty water its bubblegum hue.

An ancient Egyptian temple in the middle of Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Started as a kitchen garden, now the second largest botanical garden in the world.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”