Door, Cheng Kan Village, Anhui Province, China, Asia

Moon Gate, West Lake, Hangzhou, Zhejiang Province, China, Asia

White Buddhist stupa, Kelaniya Temple, Sri Lanka

Belltower, Perth, Western Australia, Australia

Women at the Lakshmi Puja Festival celebrating Lakshmi, the Hindu Goddess of Wealth and Beauty, India

Columbus Circle, Central Park West, New York, USA

The London Eye, built to commemorate the millennium, London, England, UK

The prehistoric Castlerigg Stone Circle, Keswick, Lake District, Cumbria, England, UK

Millstones, Stanage Edge, Peak District National Park, Derbyshire, England, UK

Embera Indians dancing, Chagres National Park, Panama, Central America

San Antimo Abbey, Siena, Tuscany, Italy

Kazakh encampment, Khovd Gol Valley, Bayan-olgii, Mongolia

Mud village, huts, Mandi region, Mali, Africa

Standing stone circle at sunrise, Stonehenge, Wiltshire, England, UK, Europe

Buddist stupa, Bodnath, Kathmandu, Nepal, Asia

Buddhist stupa lit by candles at night, Bodnath, Kathmandu, Nepal, Asia

Arctic Circle crossing point on road across tundra, Dempster Highway, Yukon, Canada

Morning Glory Pool, a geothermal pool, colours are due to algae at temperature bands, hotter below, Yellowstone National Park, Wyoming, USA

Islam Khodja minaret, Prince Makhmud mausoleum on left, Khiva, Uzbekistan, Central Asia

Fresh Uzbek bread, Samarkand, Uzbekistan, Central Asia

Inside Kazakhs yurt, Tianchi (Heaven Lake), Tien Shan, Xinjiang Province, China

Registan Square, Mir-I-Arab Madressa (madrasa), Samarkand, Uzbekistan, Central Asia

Delphi, Sanctuary of Athena, Greece, Europe

Sagrada Familia Cathedral by Gaudi, East face detail, Barcelona, Catalonia, Spain

Castlerigg Stone Circle, Cumbria, Lake District, England

Castlerigg Stone Circle, Keswick, Cumbria, Lake District, England

Close-up of ripe apple with leaves

Hay bales, Suffolk, England, UK, Europe

Chateau Sully-sur-Loire, the Loire Valley, Centre, France, Europe

Fairground ride, Pwlleli, Gwynedd, Wales, UK

Men-an-Tol, a cromlech, near Madron, Penzance, Cornwall, England, UK

A Tsubakai, a stone wash basin for the tea room, Ryoan-ji Temple in NW Kyoto, Honshu, JapanThe Zen inscription reads 'I learn only to be contented'

Abu Darwish mosque on top of Jebel Al-Ashrafiyya, Jordan, Middle East

Hammering Man sculpture, Frankfurt, Germany, Europe

The Norman Gate, Windsor Castle, Berkshire, England, UK

Portrait of a young woman, Bo Sang umbrella village, Chiang Mai, northern Thailand, Asia

Arnarstapi, Snaefellsjokull (Snaefellsnes) Peninsula, Iceland

Monument in front of St. Sava Orthodox church dating from 1935, the biggest Orthodox church in the world, Belgrade, Serbia, Europe

Sultan Qaboos Grand Mosque, built in 2001, with a prayer hall accommodating 20000, Ghubrah, Muscat, Oman, Middle East

Temple of Diana and Theatinerkirche, Hofgarten, Munich (Munchen), Bavaria, Germany, Europe

Detail of Old Town Clock on Town Hall at Old Town Square, Stare Mesto, Prague, UNESCO World Heritage Site, Czech Republic, Europe

Poulnabrone dolmen megalithic tomb, Burren, County Clare, Munster, Republic of Ireland (Eire), EuropeThe Burren (from Irish: Boireann, meaning - great rock) is a unique karst landscape in northwest County Clare, Ireland. The limestone area measures 300 square kilometres and is roughly enclosed within the circle comprised by the villages Ballyvaughan, Kinvarra, Gort, Corrofin, Kilfenora, Lisdoonvarna and the Black Head lighthouse. The definitive article (ie "The" Burren) has only been added to the name by academics in the last few decades as it has always been traditionally called Boireann or Boirinn in Irish and Burren in English.

Fruit display in Bioves Gardens, Lemon Festival, Menton, Alpes Maritimes, Provence, French Riviera, France, Europe

Melons for sale on market in the Rue Ste. Claire, Annecy, Haute-Savoie, Rhone-Alpes, France, Europe

Dragon (detail of a wooden ceiling), Forbidden City (Palace Museum), Beijing, China, Asia

St. Sava Orthodox church dating from 1935, the biggest Orthodox church in the world, Belgrade, Serbia, Europe

Old American car, Havana, Cuba, West Indies, Central America

Time exposure of steam and stars, Villarica Volcano, Chile, South America

Panoramic photo of Megalithic stone circle, Avebury, UNESCO World Heritage Site, Wiltshire, England. United Kingdom, Europe

Castlerigg Stone Circle, a 40 stone circle from 3200 BC, Keswick, Lake District National Park, Cumbria, England, United Kingdom, Europe

Old traditional windmills at sunset, Campo de Criptana, Castilla La Mancha (New Castile), Spain, Europe

Kabbadi, a traditional Indian and Sri Lankan board game where teams of two must flick their pieces into corners around the edge of the board, Sri Lanka, Asia

Detail, Selfridges shop, the Bullring Shopping Centre, Birmingham, England, United Kingdom, Europe

Ring of Brodgar, stone circle dating from between 2500 and 2000 BC, 27 out of 60 stones still standing, UNESCO World Heritage Site, Mainland, Orkney islands, Scotland, United Kingdom, Europe

Callanish (Callanais) Stone Circle dating from Neolithic period between 3000 and 1500 BC, at dawn, Isle of Lewis, Outer Hebrides, Scotland, United Kingdom, Europe

Callanish (Callanais) Stone Circle dating from Neolithic period between 3000 and 1500 BC, at dawn, Isle of Lewis, Outer Hebrides, Scotland, United Kingdom, Europe

Bocca della Verita, Santa Maria in Cosmedin, Rome, Lazio, Italy, Europe

Stone circle at dawn, Callanish, near Carloway, Isle of Lewis, Outer Hebrides, Scotland, United Kingdom, Europe

Round hay bales in a field near Morchard Bishop, Devon, England, United Kingdom, Europe

Round hay bales in a field near Morchard Bishop, Devon, England, United Kingdom, Europe

One of the stone hoops in the Great Ball Court (Gran Juego de Pelota), Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Islam Khodja minaret, Khiva, Uzbekistan, Central Asia

Snow covered rocky moorland landscape overlooking the Bronze Age walled settlement of Grimspound, Dartmoor National Park, Devon, England, United Kingdom, Europe

Bronze Age walled settlement of Grimspound, isolated in a snow covered moorland wilderness, viewed from Hookney Tor overlook, Dartmoor National Park, Devon, England, United Kingdom, Europe

Snow covered stone hut circles in Bronze Age settlement of Grimspound in Dartmoor National Park, Devon, England, United Kingdom, Europe

Drivers eye view of Circle line train entering tube station, London, England, United Kingdom, Europe

Gullfoss Waterfall (Golden Waterfall) in winter, Golden Circle tourism trail, Hvita River, Haukadalur, Iceland, Polar Regions

Closeup of suckers and teeth rings on the tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Rose window, Saint-Vincent cathedral, St. Malo, Ille-et-Vilaine, Brittany, France, Europe

Wheel of life (wheel of Samsara), Kopan monastery, Bhaktapur, Nepal, Asia

Wheel of life (wheel of Samsara), Kopan monastery, Bhaktapur, Nepal, Asia

Wheel of life (wheel of Samsara) showing rooster, snake and pig, Kopan monastery, Kathmandu, Nepal, Asia

The Japanese flag is called the Hinomaru, or sun circle, Japan

Standing stones of Castlerigg stone circle near Keswick, Lake District National Park Cumbria, England, United Kingdom, Europe

Costumed dancers at religious festival with many visitors, Paro Tsechu, Paro, Bhutan, Asia

Aerial image of Old Sarum, the original site of Salisbury with castle ruins and cathedral foundations inside two high Iron Age banks (earthworks), Wiltshire, England, United Kingdom, Europe

Aerial image of Stonehenge, prehistoric monument and stone circle, UNESCO World Heritage Site, Salisbury Plain, Wiltshire, England, United Kingdom, Europe

Aerial image of Avebury, Neolithic Monument, site of a large henge and several stone circles, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

Aerial image of Stonehenge, prehistoric monument and stone circle in snow, UNESCO World Heritage Site, Salisbury Plain, Wiltshire, England, United Kingdom, Europe

Aerial image of Yarnbury Castle, a hill fort, in snow, Wiltshire, England, United Kingdom, Europe

Aerial image of round and square Barrows at North Down in rape field, near Calstone Wellington, Wiltshire, England, United Kingdom, Europe

Aerial image of Castlerigg Stone Circle, a prehistoric monument in snow, near Keswick, Lake District National Park, Cumbria, England, United Kingdom, Europe

Aerial image of Stonehenge, prehistoric monument and stone circle, UNESCO World Heritage Site, Salisbury Plain, Wiltshire, England, United Kingdom, Europe

Aerial image of Boscawen-Un Stone Circle, with gorse flowers, St. Buryan, Cornwall, England, United Kingdom, Europe

Aerial image of Stonehenge, prehistoric monument and stone circle, UNESCO World Heritage Site, Salisbury Plain, Wiltshire, England, United Kingdom, Europe

Aerial image of Danebury Ring, an Iron Age hill fort, Wiltshire, England, United Kingdom, Europe

Aerial image of crop circle, Wiltshire, England, united Kingdom, Europe

Aerial image of Normanton Down Barrows in snow, consisting of a Neolithic long barrow and Bronze Age round barrows, Wiltshire, England, United Kingdom, Europe

Aerial view of Meggs Hill (Gog Magog Downs) (Gog Magog Hills) (the Gogs), a range of low chalk hills, Cambridgeshire, England, United Kingdom, Europe

Aerial image of Badbury Rings, an Iron Age hill fort, Dorset, England, United Kingdom, Europe

Castlerigg Stone Circle in autumn with Raven Cragg to the right and the snow topped Helvellyn mountain range in the distance, Lake District National Park, Cumbria, England, United Kingdom, Europe

Castlerigg Stone Circle in autumn with the snow topped Helvellyn mountain range in the distance, Lake District National Park, Cumbria, England, United Kingdom, Europe

The complex geometrical baroque ceiling of San Lorenzo church, designed by the architect Guarino Guarini in the 17th century, Turin, Piedmont, Italy, Europe

Rue Merciere and Strasbourg Cathedral, Strasbourg, Bas-Rhin, Alsace, France, Europe

Cupola of the St. Kajetan Church (Theatinerkirche) (Theatiner Church), Odeonsplatz, Munich, Bavaria, Germany, Europe

British Research Base W, abandoned and left in 1959 on Detaille Island, Crystal Sound, below the Antarctic Circle, Antarctica, Polar Regions

Neolothic stone circle of granite boulders, Cromeleque dos Almendres, Evora district, Alentejo, Portugal, Europe

Neolothic stone circle of granite boulders, Cromeleque dos Almendres, Evora district, Alentejo, Portugal, Europe

Islamic calligraphy of Azrael, Angel of Death, Baku, Azerbaijan, Central Asia, Asia

Bronze Age hut circle in Grimspound, Dartmoor National Park, Devon, England, United Kingdom, Europe