Grand Canyon viewed from the cliffs east of Moran Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon viewed from a cliff overlooking Papago Creek, with Papago Point just right of center, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A field of shattered wood in Tiponi Canyon in Petrified Forest National Park Arizona.

Wintery view of the Palisades of the Desert at Grand Canyon National Park Arizona.

Sandstone Waves in Ferry Swale Canyon near Page, Arizona, United States of America, North America

A hoodoo in Angels Garden at Petrified Forest, shaped like a dragon's head, Arizona, United States of America, North America

View of the south side of Johnson Point from below its cliffs at Marble Canyon, Glen Canyon Recreation Area, Arizona, United States of America, North America

Wintery view of the Palisades of the Desert at Grand Canyon National Park Arizona.

A hiker standing on a snowy cliff on the east rim of Grand Canyon National Park Arizona.

View of Tunnel Canyon in Canyon De Chelly from just west of Tseyi Overlook, Arizona, United States of America, North America

Waterfall in the Plitvice Lakes National Park, UNESCO World Heritage Site, Croatia, Europe

View of Hermit Canyon from Dripping Springs trail at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Troll Hill at Petrified Forest National Park Arizona along the Red Basin Trail.

The Colorado River viewed from the Palisades of the Desert near Comanche Point at Grand Canyon Arizona.

A field of shattered wood in Tiponi Canyon in Petrified Forest National Park Arizona.

Slabs of stone along the Red Basin Trail called the Tabletops at Petrified Forest National Park Arizona.

View of Cottonwood Canyon in Canyon De Chelly west of the Tseyi Overlook, Arizona, United States of America, North America

Onyx Bridge at Petrified Forest National Park, Arizona, United States of America, North America

View of O'Neill Butte from its north side along the South Kaibab Trail at Grand Canyon Arizona just after sunrise.

View of Yuma Point from Hermit Trail in winter at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Pipe Creek from the west cliff of Skeleton Point at Grand Canyon Arizona along the South Kaibab Trail.

The north hills of Tiponi Valley in Petrified Forest National Park Arizona.

Frozen craggy cliffs along the Palisades of the Desert at Grand Canyon Arizona.

Fruit and vegetable stall at canal side market, Venice, Veneto, Italy, Europe

Child at a window, La Boca, Buenos Aires, Argentina, South America

Party at Bombordo club, Porto Seguro, Bahia, Brazil, South America

Mosteiro dos Jeronimos (Monastery of the Hieronymites), dating from the 16th century, UNESCO World Heritage Site, Belem, Lisbon, Portugal, Europe

Elephant feeding in Ngoro Ngoro Crater, Tanzania

Views of the roofs of the Quartier des Chartrons, town of Bordeaux, Gironde, Aquitaine, France, Europe

Reduit beach, Rodney Bay, St. Lucia, Windward Islands, West Indies, Caribbean, Central America

Tourists in the cafe contemplate the Duomo and its square, Milan, Lombardy, Italy, Europe

City view from harbour, Halifax, Nova Scotia, Canada, North America

Buddhist medal, Paris, France, Europe

Historical parade at Bad Urach Schaferlauf, Bad Urach Swabian Alb, Baden Wurttemberg, Germany, Europe

Windmill at Lille, Nord Pas de Calais, France, Europe

Corso Garibaldi, Ancona, Marche, Italy, Europe

Loop Head Lighthouse, County Clare, Munster, Republic of Ireland, Europe

Douarnenez, Brittany, France, Europe

Bungle Bungle, Purnululu National Park, UNESCO World Heritage Site, Kimberley, Western Australia, Australia, Pacific

Crowds in the bullring during the annual festival of San Fermin (The Running of the Bulls) in Pamplona, Navarra, Euskadi, Spain, Europe

Ghana farmer holding a hoe for digging bongo, bolgatanga (north ghana)

Nuraghe Nuraddeo, Suni, Sardinia, Italy, Europe

Sarajevo and mountain view fom Avaz Twist Tower, Sarajevo, Bosnia and Herzegovina, Europe

Twin Lakes National Historic District, Leadville area, Colorado, United States of America, North America

Reliefs of water nymphs from the Fontaine des Innocents in Paris, in the Cast Court, Victoria and Albert Museum, London, England, United Kingdom, Europe

Scalloped hammerhead shark (Sphyrna lewini), Kaneohe, Oahu, Hawaii, United States of America, Pacific

An adult spinetail mobula (Mobula japanica) cruising the surface in the calm waters off Isla del Carmen in the Gulf of California (Sea of Cortez), Baja California, Mexico.

Red hot poker plants in Barrow Park, Cumbria, England, United Kingdom, Europe

This is the central area of Cygnus and its bright Milky Way starcloud surrounded by red nebulosity. At left is the star Sadr (gamma Cygni) with the complex of nebulosity catalogued as IC 1318. At centre is the distinct Crescent Nebula, NGC 6888, a expanding nebula created by winds from a hot Wolf-Rayet star. At bottom left is the star cluster Messier 29, though looking a little lost in the rich starfields here. At top is the cluster IC 1311, looking more obvious than M29 but not observed visually and included in the NGC catalog. Odd. At far right are the large and loose star clusters NGC 6883 and NGC 6871, the latter an obvious binocular sight. To the left of Sadr is the small cluster NGC 6910. The dark nebulas B145 and LDN 862 are at right. The small emission nebula at bottom is Sharpless 2-104.

Detail of a vegetable stand, Potatoes, beans, aubergines, peas, peppers, food market, Fianarantsoa city, Madagascar

Whooper Swans

Pilates, woman

Sacrament Niche, 1390-1400, beside the high altar, St. James Church, built 1311-1484, Evangelical Lutheran Parish Church of St. Jakob, Rothenburg ob der Tauber, Bavaria, Germany, Europe

Church at the waterfront, Tabgha Church, Galilee, Israel

COLOMBIA People Kogi Ramonil and Juancho two Kogi priests from the Sierra de Santa Marta against a backdrop of misty green hills Named Ramonil and Juancho

lighthouse on rock coast ocean

Chinese painting

Four friends lying on towels while holding cocktails

Cityscape of Chicago, Chicago, Illinois

Horses in a meadow on the Wehrendorf mountain road near Bad Essen