Thousands of birds nest in the cliffs while arctic foxes prowl below.

In an isolated field near a dilapidated barn stands this chilling portrayal of the plight of the Nuba peoples of Sudan.

The giant squid's 27-foot-long corpse lies preserved within a Sarasota aquarium.

An exceptional assortment of fossils recovered from private collections.

This amazingly preserved Doric temple was abandoned before it was ever completed.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

The castle still holds traces of the abandoned Roman fort it was built atop.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

So many migrating birds roost on the bridge, it has a special summer speed limit.

A botanical garden full of thought-provoking contemporary sculptures.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

The burial place of some of Mexico's most prominent residents is full of macabre stories and hidden masonic symbols.

This pond is so stunning it looks like you've stepped into one of Monet's masterpieces.

An ancient Egyptian temple sits within a modern European museum.

Sweden's largest optical telescope sits on a rooftop in Stockholm.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

This sculpture garden is a serene oasis wedged in the middle of a busy highway.

A pre-Hispanic pyramid in the middle of a tourist district in the Canary Islands.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

A pair of disused Los Angeles electrical poles now glow with delicate windows into the past.

These ruins are all that's left of the former Alabama State Capitol.

These tenacious 14th-century towers defied demolition and are now a fairytale vacation rental.

These ruins reveal the remarkably intact layout of a Roman marketplace.