High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Historic medieval fortified city in southwest France.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

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

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

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.

Founded as a refugee camp, now a popular tourist spot.

Crumbling necropolis set high above Fez.

God's Saharan sandbox of wrath.

Mosaics, storks, and brothels—this ancient city has it all.

Morocco's Argania trees are infested with nut-hungry goats.

Vast stretch of tide-pools with a unique Moroccan charm.

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

One of the most spectacular canyons in the world.

A fortified city, home to a remaining population of five families

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

The world's tallest bridge is also possibly the most elegant.

Alien rock formations grown from the sands of an Australian national park.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

The only pollutant in the clear blue water is sunscreen.

A small, but award-winning beach known for its literally spotless reputation.

One of Australia's famed "Big Things," this giant fruit was once stolen as part of a publicity stunt.