Go inside to really appreciate this 500-year-old technological masterpiece.

An ancient Viking village in North America that predates Columbus by 500 years.

An encyclopedic collection of mammal penises.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The tiny airport in remote Newfoundland that inspired a hit musical is also a modernist architectural gem.

A World War II gun battery sits at the easternmost point of North America.

An old drug store full of mortars and pestles, pill-making machines, and medicines reputed to cure most any illness.

Where a young athlete began his run across Canada after losing his right leg to cancer.

A statue of the early navigator stands overlooking the land he first surveyed.

A forlorn fishing village on the coast of Labrador, full of shipwrecks and Spanish gold.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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.

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.”

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

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

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Daily jousts and dancing barrel makers in Munich's mechanical clock.