The view from above reveals a derelict complex of pod-like structures with seemingly alien origins; a bewildering concrete construction in the mountains of Bosnia; a puzzling collection of out of place shapes discarded in the wilds of Greenland.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

Cameras capture evidence of ancient civilizations. Featuring a mysterious Norwegian mound, a pre-historic stone circle on the banks of the Tagus River and a lost city in the very cradle of civilization.

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle; clues to what killed a once-vibrant Pennsylvania mining town; an aerial glimpse of New York's forgotten ghost town; an Italian Renaissance reduced to dust.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent; investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

Get petrified by cryptic rock structures normally hidden from view. Look inside curious dwellings in the Peruvian Andes, visit a sacred monolith in Wyoming's Black Hills, haunt a Turkish stone village, and spot an immovable waterfall in Mexico.

Confront objects that make no sense. Spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia, and a huge human figure hidden in the Australian outback.

Visits to some of the most cavernous places on Earth, including Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert and a voluminous void in Antarctica.

Tower over amazing metropolises. Learn why an important urban centre is sinking toward oblivion, soar over sprawling ruins buried under Saharan sands, learn the modern secret of an ancient fortress, and eye a ghost town on the edge of the Gobi.

In Plain Sight: Discover over a hundred massive concrete arrows scattered across America, a giant chalk figure with an oversized phallus on an English hillside and a mysterious hole in the middle of a lake in Southern California

Explore strongholds abandoned by their architects. Look at a lost city in the Amazon jungle, see a desert fortress made by humanity's most notorious empire, explore a city of identical castles, and examine a Greek isle's bloody history from the air.

Take a deep dive into watery enigmas. Glide over a sunken Italian city, a unique underwater cemetery in the Florida Keys, a yellow brick road to nowhere in the depths of the North Pacific, and puzzling rocky constructions off the coast of Australia.

Revealed from above; mysterious holes in Isreal; a ghost village hidden in the Colombian jungle; a shipwreck off the coast of Sri Lanka; and a gutted airplane fuselage abandoned in Iceland.

Strange markings in the remote region of Northern Finland; drones find a Manhattan-size mystery in the depths of a Vietnamese cave; secrets are no longer hidden in the Antarctic; a lost sky-high world in Mozambique gets a visit from above.

Peek at landmarks in places where they shouldn't be. Wing your way over an imperial pyramid in the Netherlands, a massive metal sphere in remote Russia, a lion shape carved into an English hillside, and a bare swath cut through an Austrian forest.M

Accidental Discoveries. Using the view from above, drone pilots and satellite imagery specialists are uncovering a vanished Neolithic structure in an Irish farmer's field, an ancient oasis in the far reaches of the Chinese desert, centuries-old buried treasure in Britain and a fearsome predator roaming the Pacific Ocean has made cozy and all just by accident.

Submerged: A Turkish drought reveals a long-lost ancient Basilica and its secrets, a church spire punches through the surface of a toxic sludge in Romania and the hull of a massive ship in the North Sea answers decades old questions

From above, a constant inferno in Turkmenistan, mysterious circles in the Namibian desert, slithering stones across Death Valley, and the secret of Utah's electric blue ponds.