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

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

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

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

Moss and stone turn this waterfall into an otherworldly liquid veil.

An entertainment center in a huge transparent tent.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The only remaining U-boat that is still floating never actually saw any action in World War II.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Romania's triumphal arch looks out over Bucharest.

A Roman monument to their own civil engineering prowess.

A giant portrait of an ancient king looms over the river.

17th century palace once a meeting place for politicians.

Religious structure known for its sculpted details.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

Theme park featuring miniature replicas of European monuments.

A little sculpture with a large wardrobe.

France's most famous cemetery, with some of its most curious tombs.