Picturesque intersection of witchcraft and ancient Christianity.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

This little-known national museum houses over 40,000 works of art from across the world.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

This Stockholm light tower can be controlled by anyone with a smartphone.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.