Lioness (Panthera leo) in the Kalahari, Kgalagadi Transfrontier Park, Northern Cape, South Africa, Africa

Lion cubs (Panthera leo) in the Kalahari, Kgalagadi Transfrontier Park, Northern Cape, South Africa, Africa

The snowy peaks above the frozen sea framed by the blue lights of dusk, Gryllefjorden, Senja, Troms County, Arctic, Norway, Scandinavia, Europe

Hiker admires the waves of the icy sea crashing on the rocky cliffs at dawn, Tungeneset, Senja, Troms county, Arctic, Norway, Scandinavia, Europe

Orange sky at sunset reflected on snowy peaks and the frozen sea surrounded by rocks Tungeneset, Senja, Troms County, Arctic, Norway, Scandinavia, Europe

Beautiful white sand beach on Monuriki Island (Cast Away Island), Mamanuca Islands, Fiji, South Pacific

Very clear turquoise waters on Monuriki Island (Cast Away Island), Mamanuca Islands, Fiji, South Pacific

Very clear turquoise waters on Monuriki Island (Cast Away Island), Mamanuca Islands, Fiji, South Pacific

Sailing boat anchoring on Mana Island, Mamanuca Islands, Fiji, South Pacific

Beautiful South Sea island, Mamanuca Islands, Fiji, South Pacific

Beautiful South Sea island, Mamanuca Islands, Fiji, South Pacific

Beautiful South Sea island, Mamanuca Islands, Fiji, South Pacific

Sailing boat anchoring on Mana Island, Mamanuca Islands, Fiji, South Pacific

Beautiful South Sea island, Mamanuca Islands, Fiji, South Pacific

Aerial of the country of Tuvalu, South Pacific

Aerial of the country of Tuvalu, South Pacific

Clothes drying in the open sun, Funafuti, Tuvalu, South Pacific

Ano, a traditional localised form of volleyball, Funafuti, Tuvalu, South Pacific

Aerial of the state of Kosrae, Federated States of Micronesia, South Pacific

Long pier over a swamp, Kosrae, Federated States of Micronesia, South Pacific

Yela Ka forest conservation area of ka trees (Terminalia carolinensis) in the Yela Valley, Kosrae, Federated States of Micronesia, South Pacific

Man looking at the Tafunsak waterfall, Kosrae, Federated States of Micronesia, South Pacific

Swamp area in the Utwe lagoon, UNESCO Biosphere Reserve, Kosrae, Federated States of Micronesia, South Pacific

Crystal clear water in the Utwe lagoon, UNESCO Biosphere Reserve, Kosrae, Federated States of Micronesia, South Pacific

Crystal clear water in the Utwe lagoon, UNESCO Biosphere Reserve, Kosrae, Federated States of Micronesia, South Pacific

Utwe lagoon, UNESCO Biosphere Reserve, Kosrae, Federated States of Micronesia, South Pacific

Crystal clear water in the Utwe lagoon, UNESCO Biosphere Reserve, Kosrae, Federated States of Micronesia, South Pacific

Stingray swimming in the crystal clear water in the Utwe lagoon, UNESCO Biosphere Reserve, Kosrae, Federated States of Micronesia, South Pacific

White sand beach, Kosrae, Federated States of Micronesia, South Pacific

Man in his dugout canoe, Kosrae, Federated States of Micronesia, South Pacific

Volcanic plateau of Sierra Tarahumara, above Copper Canyon, Chihuahua, Mexico, North America

Cascada de Basaseachi, a 246m waterfall, Copper Canyon, Chihuahua, Mexico, North America

Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America

Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America

Volcanic plateau of Sierra Tarahumara, above Copper Canyon, Chihuahua, Mexico, North America

Cabo San Lucas, Baja California, Mexico, North America

Punta Gasparena, Pacific coast south from Todos Santos, Baja California, Mexico, North America

Cabo San Lucas, Baja California, Mexico, North America

Desert road near Santa Rosalia, Baja California, Mexico, North America

Volcan las Tres Virgenes, Santa Rosalia, Baja California, Mexico, North America

Turkey vultures on Cardon cacti, morning warm-up, San Ignacio, Baja California, Mexico, North America

Picking beans, El Rosario, Baja California, Mexico, North America

Cardon cacti by main road down Baja California, near Loreto, Mexico, North America

Bay near Loreto, into Sea of Cortez, Baja California, Mexico, North America

Cardon cactus, near Loreto, Baja California, Mexico, North America

East coast of Baja California, Sea of Cortez, north of La Paz, Mexico, North America

Traditional boats on Loire River, Chouze-sur-Loire, UNESCO World Heritage Site, Indre et loire, Loire Valley, France, Europe

Burrowing owl (Athene cunicularia), among autumn foliage, United Kingdom, Europe

Common kestrel (Falco tinnunculus), among autumn foliage, United Kingdom, Europefoliage.

Tawny owl (Strix aluco), among autumn foliage, United Kingdom, Europe

Burrowing owl (Athene cunicularia), among autumn foliage, United Kingdom, Europe

Common kestrel (Falco tinnunculus), among autumn foliage, United Kingdom, Europe

Common kestrel (Falco tinnunculus), among autumn foliage, United Kingdom, Europe

Tawny owl (Strix aluco), among autumn foliage, United Kingdom, Europe

Common buzzard (Buteo buteo), flapping wings on the ground, United Kingdom, Europe

Common buzzard (Buteo buteo), among the autumn foliage, United Kingdom, Europe

Tawny owl (Strix aluco), among autumn foliage, United Kingdom, Europe

Burrowing owl (Athene cunicularia), among autumn foliage, United Kingdom, Europe

Tawny owl (Strix aluco), among autumn foliage, United Kingdom, Europe

Common buzzard (Buteo buteo), among the autumn foliage, United Kingdom, Europe

Breze, castle of Breze, dated 16th century, Maine et Loire, Anjou, France, Europe

Breze, castle of Breze, dated 16th century, Maine et Loire, Anjou, France, Europe

Siracusa Cathedral, Syracuse, UNESCO World Heritage Site, Sicily, Italy, Europe

Little girl heading down a narrow Sicilian lane, Syracuse, Sicily, Italy, Europe

Castle and Gardens of Valmer, Indre et Loire, Centre, France, Europe

Castle and Gardens of Valmer, Indre et Loire, Centre, France, Europe

Castle and Gardens of Valmer, Indre et Loire, Centre, France, Europe

Glasgow Cathedral, Glasgow, Scotland, United Kingdom, Europe

Glasgow Cathedral and Royal Infirmary, Glasgow, Scotland, United Kingdom, Europe

Glasgow Necropolis, Glasgow, Scotland, United Kingdom, Europe

View of Perthshire Mountains and Rape field (Brassica napus) in foreground, Scotland, United Kingdom, Europe

Rape field, Rapeseed (Brassica napus), Perthshire, Scotland, United Kingdom, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Brown Bear (Ursus arctos) during spring snowfall, Finland, Scandinavia, Europe

Riverside Museum and docked ship The Glenlee, River Clyde, Glasgow, Scotland, United Kingdom, Europe

Clyde Arc (Squinty Bridge), Finnieston, River Clyde, Glasgow, Scotland, United Kingdom, Europe

Riverside Museum, River Clyde, Glasgow, Scotland, United Kingdom, Europe

Kids at play in rural Laos, Indochina, Southeast Asia, Asia

Keang Si waterfalls, near Luang Prabang, Laos, Indochina, Southeast Asia, Asia

Swan on misty lake at sunrise, Clumber Park, Nottinghamshire, England, United Kingdom, Europe

Church of St. Mary The Virgin at Clumber Park, Nottinghamshire, England, United Kingdom, Europe

Man cutting palm fronds for thatching in Bali, Indonesia, Southeast Asia, Asia

Covered market in Denpasar, Bali, Indonesia, Southeast Asia, Asia

Hang gliding in Rio de Janeiro, Brazil, South America

Old houses in La Petite France, Strasbourg, Bas Rhin, Alsace, France, Europe

The Duomo of San Frediano, Barga, Tuscany, Italy, Europe

Stone barn in the Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Pont Valentre in the city of Cahors, Lot, France, Europe

The church, reportedly owned by the Knights Templar, and old priory in Sainte Croix de Beaumont, Dordogne, France, Europe

A TGV high speed train leaves the train station in Tours, Indre et Loire, Centre, France, Europe

The gothic Chartres cathedral, UNESCO World Heritage Site, Chartres, Eure et Loir, Centre, France, Europe

Salisbury cathedral across the rooftops of the city, Salisbury, Wiltshire, England, United Kingdom, Europe

Wind turbines at sunset, Whitelee Wind Farm, East Renfrewshire, Scotland, United Kingdom, Europe

Wind Turbines, Whitelee Wind Farm, East Renfrewshire, Scotland, United Kingdom, Europe

Arundells, the former home of Sir Edward Heath, a British Prime Minister, Salisbury, Wiltshire, England, United Kingdom, Europe

Salisbury Cathedral from the West Harnham Water Meadows, Salisbury, Wiltshire, England, United Kingdom, Europe

The magnificent Salisbury cathedral, Salisbury, Wiltshire, England, United Kingdom, Europe

Notre Dame de Paris Cathedral, UNESCO World Heritage Site, Paris, France, Europe

A cafe in Passage des Panoramas, Paris, France, Europe

Cathedrale Saint-Andre de Bordeaux, Bordeaux, Gironde, Aquitaine, France, Europe

Looking down rue Vital Carles to Saint Andre cathedral in Bordeaux, Aquitaine, France, Europe

The Chateau des Ducs de Bretagne in the city of Nantes, Pays de la Loire, Loire Atlantique, France, Europe

The Chateau des Ducs de Bretagne in the city of Nantes, Pays de la Loire, Loire Atlantique, France, Europe

The pretty Cotswolds village of Castle Combe, north Wiltshire, England, United Kingdom, Europe

The pretty Cotswolds village of Castle Combe, north Wiltshire, England, United Kingdom, Europe

The pretty Cotswolds village of Castle Combe, north Wiltshire, England, United Kingdom, Europe

Basilica di San Miniato al Monte, Florence, Tuscany, Italy, Europe

The inner courtyard of the Palazzo Medici Riccardi, Florence, UNESCO World Heritage Site, Tuscany, Italy, Europe

Typical building facade in Aix-en-Provence, Bouches du Rhone, Provence, France, Europe

Poulnabrone Portal Tomb, County Clare, Munster, Republic of Ireland, Europe

Newgrange, UNESCO World Heritage Site, County Meath, Leinster, Republic of Ireland, Europe

Kinvara, County Galway, Connacht, Republic of Ireland, Europe

Upper Lake, Glendalough, County Wicklow, Leinster, Republic of Ireland, Europe

Charleville Castle, Tullamore, County Offaly, Leinster, Republic of Ireland, Europe

The cathedral of Saint Etienne, Bourges, UNESCO World Heritage Site, Cher, France, Europe

The cathedral of Saint Etienne, Bourges, UNESCO World Heritage Site, Cher, France, Europe

The cathedral of Saint Etienne, Bourges, UNESCO World Heritage Site, Cher, France, Europe

Saint Etienne cathedral in Bourges, UNESCO World Heritage Site, Cher, France, Europe

The chateau of Chenonceau reflecting in the waters of the River Cher at dawn, Indre-et-Loire, Loire Valley, UNESCO World Heritage Site, Centre, France, Europe

The chateau of Villandry at night, Indre-et-Loire, Loire Valley, UNESCO World Heritage Site, Centre, France, Europe

Interior of Saint Gatien cathedral, Tours, Indre-et-Loire, Centre, France, Europe

Perito Moreno Glacier, Patagonia, Argentina, South America

The Pont Jacques-Gabriel across the River Loire in Blois, Loir-et-Cher, Centre-Val de Loire, France, Europe