Huge winged monument in the United Kingdom.

World's oldest and largest space launch facility, once a secret missile testing site.

This elderly couple's hand-picked collection of rare gems is one of the finest in all of Iceland.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

The highest waterfall in Italy is only "turned on" five times a year.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.

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

This small group of sand dunes manages to pack in a strange rainbow of colors.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

This ancient shrine has been rebuilt every 20 years since the eighth century.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Man-made geyser that rises to the exact height of the Gateway Arch.

This abandoned oil depot produces world's longest echo in a manmade structure.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

One of the largest caverns in the world has a maw large enough to stack cathedrals in.