Cave of the Lakes in Kalavryta, Achaia, Peloponnese, Greece (© Hercules Milas/Alamy)(Bing Australia)

Angel Falls, Venezuela (© AirPano Ltd)(Bing Australia)

Mardi Gras beads in New Orleans, Louisiana (© David H. Lewis/Getty Images)(Bing Australia)

Spillway, Monte da Rocha Dam, near Ourique, Portugal (© André Gonçalves/SuperStock)(Bing Australia)

Secretary bird, Kruger National Park, South Africa (© Johannes Swanepoel/Alamy)(Bing Australia)

Bluebells in the Halle Forest near Halle, Belgium (© Ocean/Corbis)(Bing Australia)

Tea fields in Munnar, Kerala, India (© Vidhu S/500px)(Bing Australia)

Toronto City Hall, Toronto, Ontario, Canada (© Michael Woloszynowicz/500px)(Bing Australia)

Wenthworth Falls in the Blue Mountains, New South Wales (© Stonemeadow Photography/Alamy)(Bing Australia)

Moeraki Boulders, New Zealand (© Uli Hamacher/Getty Images)(Bing Australia)

Antarctic Sound at sunset, Antarctica (© Enrique R Aguirre Aves/Getty Images)(Bing Australia)

Poulnabrone dolmen, Burren National Park in Ireland (© Danita Delimont/Getty Images)(Bing Australia)

Coastline of Acadia National Park, Maine (© David Zimmerman/Masterfile)(Bing Australia)

Sheep among a king penguin colony in the Falkland Islands (© Frans Lanting/Corbis)(Bing Australia)

Machu Picchu, Peru (© Image Source/Corbis)(Bing Australia)

Bonsai Rock, Lake Tahoe, Nevada (© Josh Miller/Corbis)(Bing Australia)

The ceiling of the Royal Exhibition Building in Melbourne, Victoria (© Raymond Warren / Alamy)(Bing Australia)

Mount Ruapehu’s crater lake in New Zealand (© xflo:w/500px)(Bing Australia)

Dettifoss waterfall, Asbyrgi, Iceland (© Matthew Eisman/TandemStock)(Bing Australia)

Global map of winds (© NASA)(Bing Australia)

Auditorium Parco Della Musica, Rome, Italy (© Alastair Philip Wiper/Corbis)(Bing Australia)

Rosy Sundew trichomes (Drosera hamiltonii), Australia (© Barry Rice/Visuals Unlimited)(Bing Australia)

Galápagos sea lion swims through a school of black-striped salema fish off Santa Cruz Island, Galápagos Islands, Ecuador (© David Fleetham/Visuals Unlimited, Inc.)(Bing Australia)

Cancún, Mexico panorama (© AirPano Ltd)(Bing Australia)

Rickshaws and view of Taj Mahal in Agra, India (© Dinesh Khanna/Axiom)(Bing Australia)

Falkirk Wheel in Scotland (© David Queenan/500px)(Bing Australia)

Male hooded merganser in Beaufort, South Carolina (© Eric Horan/age fotostock)(Bing Australia)

Blue Lagoon, Comino, Malta (© Jason Hawkes)(Bing Australia)

Eurasian wren in Kōfu, Tottori, Japan (© Photo: CorbisMotion/Music: Getty Images)(Bing Australia)