One of the smallest bookstores on the planet.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

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

The world's oldest bookshop still in operation.

This charming candle shop has been in business since 1789.

Tucked away inside this concrete building is a church and its grand display of brutalist architecture.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

This Parisian fountain is a little bit fantasy and a little bit nightclub.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

The remains of the medieval wall that once surrounded Paris with ties to the construction of the Louvre.

The narrowest street in Paris.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

This 19th-century fountain's namesake animal isn't what you think it is.

Giant topiary dog once played a role in a terrorist bomb plot.

These primitive rock paintings include a very beloved depiction of a woolly mammoth.

This enchanting green space houses a labyrinth lined with toxic plants.

The remains of an encyclopedic sculpture garden later used as an internment camp.

This enormous censer uses a pulley system installed over 400 years ago.

The stunning interior of this Gothic church is covered in ornate gold details.

Elaborate tile work in this railway station tells the story of Portugal.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.