Seated Buddha and monks meditating, Wat Si Chum, Sukhothai Historical Park, Thailand

Buddhist monks praying during the celebration of Losar (Tibetan New Year), Bodhnath, Katmandu, Nepal

Surfers on Prainha beach, Barra da Tijuca, Rio de Janeiro, Brazil, South America

Sumo wrestlers practising, Tokyo City, Honshu Island, Japan, Asia

Royal Opera House, Muscat, Oman, Middle East

Sheikh Zayed Grand Mosque, Abu Dhabi, United Arab Emirates, Middle East

Backlit image of workers loaded with sulphur pieces cut out from a sulphur mine on Ijen crater lake, Java, Indonesia, Southeast Asia, Asia

Fully loaded baskets of sulphur ready to be carried out of the Ijen Volcano, Java, Indonesia, Southeast Asia, Asia

Workers carrying big pieces of sulphur out of the Ijen Volcano, Java, Indonesia, Southeast Asia, Asia

Worker carrying fully loaded baskets of sulphur out of the Ijen Volcano, Java, Indonesia, Southeast Asia, Asia

Rickshaws outside Christ Church in the town square, Melaka (Malacca), UNESCO World Heritage Site, Malaysia, Southeast Asia, Asia

Local man looking at a huge canyon on the Dixsam plateau on the island of Socotra, UNESCO World Heritage Site, Yemen, Middle East

Men selling fish at the Fish Market of Hadibo, capital of the island of Socotra, Yemen, Middle East

Evzone soldiers, Changing the Guard, Syntagma Square, Athens, Greece, Europe

Bedouin man, Wadi Rum, Jordan, Middle East

Worshippers at The Western Wall, Jerusalem, Israel, Middle East

Worshippers at The Western Wall, Jerusalem, Israel, Middle East

Tourists at ruins of My Son Sanctuary, UNESCO World Heritage Site, Hoi An, Quang Nam, Vietnam, Indochina, Southeast Asia, Asia

Orthodox women praying at the Easter ceremony, Coptic Cathedral of St. Mariam, Asmara, capital of Eritrea, Africa

Orthodox women praying at the Easter ceremony, Coptic Cathedral of St. Mariam, Asmara, capital of Eritrea, Africa

Orthodox women praying at the Easter ceremony, Coptic Cathedral of t. Mariam, Asmara, capital of Eritrea, Africa

Coptic Cathedral of St. Mariam, Asmara, Eritrea, Africa

St. Mary's Catholic Cathedral on Harnet Avenue, Asmara, capital of Eritrea, Africa

Camel caravan walking with firewood through Keren, Eritrea, Africa

The Monday animal market of Keren, Eritrea, Africa

Street scene in the town of Keren, Eritrea, Africa

Horse cart at the Monday market of Keren, Eritrea, Africa

The Monday animal market of Keren, Eritrea, Africa

The Monday animal market of Keren, Eritrea, Africa

Sunset over Lake Titicaca, Copacabana, Lake Titicaca, Bolivia, South America

Dancers in traditional costume, Fiesta de la Virgen de la Candelaria, Copacabana, Lake Titicaca, Bolivia, South America

Street Scene, Potosi, UNESCO World Heritage Site, Southern Altiplano, Bolivia, South America

Tourists enjoying the Sunset over the Salar de Uyuni, Southern Altiplano, Bolivia, South America

Dancers in traditional costume, Fiesta de la Virgen de la Candelaria, Copacabana, Lake Titicaca, Bolivia, South America

Copacabana Beach in the late afternoon, Lake Titicaca, Bolivia, South America

Market in Adi Keyh, Eritrea, Africa

The giant sycamore tree featured on the Eritrean five Nakfa banknote (Five Nakfa tree) near Segeneyti, in the highlands of Eritrea, Africa

Market in Adi Keyh, Eritrea, Africa

Market in Adi Keyh, Eritrea, Africa

Market in Adi Keyh, Eritrea, Africa

Buddha statue, Ananda temple, Bagan (Pagan), Myanmar (Burma), Asia

Meal time at Maha Ganayon Kyaung Monastery, Mandalay, Myanmar (Burma), Asia

Meal time at Maha Ganayon Kyaung Monastery, Mandalay, Myanmar (Burma), Asia

Meal time at the Kha Khat Wain Kyaung monastery, Bago, Myanmar (Burma), Asia

People praying, Htilominlo Pahto temple, Bagan (Pagan), Myanmar (Burma), Asia

People praying, Htilominlo Pahto temple, Bagan (Pagan), Myanmar (Burma), Asia

Ceremonial boat, Phaung Daw Oo Pagoda Festival, Inle Lake, Shan State, Myanmar (Burma), Asia

Ceremonial boat, Phaung Daw Oo Pagoda Festival, Inle Lake, Shan State, Myanmar (Burma), Asia

Ceremonial boat, Phaung Daw Oo Pagoda Festival, Inle Lake, Shan State, Myanmar (Burma), Asia

Hikers descend a grassy slope with lake, mountain and iceberg view; near Ferrier Vista Point, Torres del Paine, Patagonia, Chile, South America

Pittville Pump Room, Pittville Park, Cheltenham, Gloucestershire, England, United Kingdom, Europe

Venetian harbour, Venetian Fortress, Iraklion (Heraklio) (Iraklio), Crete, Greek Islands, Greece, Europe

Man pulling a canoe on the Bohorok River to transport tourist to the Bukit Lawang Orang Utan Rehabilitation station, Sumatra, Indonesia, Southeast Asia, Asia

Tourist boat floating through the Puerto Princesa underground river, the New Wonder of the World, Puerto-Princesa Subterranean River National Park, UNESCO World Heritage Site, Palawan, Philippines, Southeast Asia, Asia

Tourists in a rowing boat entering the Puerto Princesa underground river, the New Wonder of the World, Puerto-Princesa Subterranean River National Park, UNESCO World Heritage Site, Palawan, Philippines, Southeast Asia, Asia

Tourist boat floating through the Puerto Princesa underground river, the New Wonder of the World, Puerto-Princesa Subterranean River National Park, UNESCO World Heritage Site, Palawan, Philippines, Southeast Asia, Asia

Old Vespa moped through the streets of Rome, Lazio, Italy, Europe

Easter Procession in the Basilica de Minore del Santo Nino, Cebu City, Cebu, Philippines, Southeast Asia, Asia

Magellan's Cross, Cebu City, Cebu, Philippines, Southeast Asia, Asia

Easter Procession in the Basilica de Minore del Santo Nino, Cebu City, Cebu, Philippines, Southeast Asia, Asia

Exterior of Palacio de Bellas Artes, Mexico City, Mexico, North America

Runner at Hound Tor, Dartmoor, Devon, England, United Kingdom, Europe

Runner on the coastal footpath at Boscastle, Cornwall, England, United Kingdom, Europe

West Lake shore with hilly landscape and silhouettes, Hangzhou, Zhejiang, China, Asia

Colourfully illuminated traditional architecture and trees in the old town of Lijiang, UNESCO World Heritage Site, Yunnan province, China, Asia

Naxi minorities and young urban professionals from other parts of China in Dayan, Old Town of Lijiang, UNESCO World Heritage Site, Lijiang, Yunnan, China, Asia

Lake Alpsee near Castle Neuschwanstein and Fuessen town with people enjoying leisure activities, Bavaria, Germany, Europe

Busy Lijiang Old Town, UNESCO World Heritage Site, at night with Lion Hill and Wan Gu Tower, Lijiang, Yunnan, China, Asia

Visitors walking along the Serpentine with daffodils in the foreground, Hyde Park, London, England, United Kingdom, Europe

Box Hill, North Downs, Surrey Hills, Surrey, England, United Kingdom, Europe

Box Hill, North Downs, Surrey Hills, Surrey, England, United Kingdom, Europe

Tourists on Swanage Beach, Dorset, England, United Kingdom, Europe

Worshippers at the Ramkund tank on the ghats along the holy River Godavari, Nasik (Nashik), Maharashtra, India, Asia

The Outer Hypostyle Hall in the Temple of Hathor, Dendera necropolis, Qena, Nile Valley, Egypt, North Africa, Africa

Carvings on the outside wall of the Temple of Hathor, Dendera necropolis, Qena, Nile Valley, Egypt, North Africa, Africa

Residential street in the new town of Nani Daman, Daman, Gujarat, India, Asia

The Outer Hypostyle Hall in the Temple of Hathor, Dendera necropolis, Qena, Nile Valley, Egypt, North Africa, Africa

Cricket nets on the Oval Maidan green space, Mumbai, India, Asia

Fishing boat harbour, Porbander, Gujarat, India, Asia

Hooker Lake and Glacier with icebergs and Mount Cook, Mount Cook National Park, UNESCO World Heritage Site, Canterbury region, South Island, New Zealand, Pacific

Dart River Jet, Glenorchy, Otago, South Island, New Zealand, Pacific

Skyline Restaurant with Lake Wakatipu and the Remarkables at dusk, Queenstown, Otago, South Island, New Zealand, Pacific

Swing bridge in Hooker Valley with Mount Cook, Mount Cook National Park, UNESCO World Heritage Site, Canterbury region, South Island, New Zealand, Pacific

The Monument to the Great Fire of London of 1666, by Sir Christopher Wren and Robert Hooke, City of London, England, United Kingdom, Europe

Tourists hiking up to the Franz-Joseph Glacier, Westland Tai Poutini National Park, Southern Alps, UNESCO World Heritage Site, South Island, New Zealand, Pacific

Tour guide hiking on the ice of Fox Glacier, Westland Tai Poutini National Park, South Island, New Zealand, Pacific

Phanom Rung Temple, Khmer temple from the Angkor period, Buriram Province, Thailand, Southeast Asia, Asia

Wat Phra Ram, Ayutthaya Historical Park, UNESCO World Heritage Site, Ayutthaya, Thailand, Southeast Asia, Asia

Nyhavn (New Harbour), busy restaurant and bar area, Copenhagen, Denmark, Scandinavia, Europe

Souq Waqif looking towards the illuminated spiral mosque of the Kassem Darwish Fakhroo Islamic Centre, Doha, Qatar, Middle East

Souq Waqif looking towards the illuminated spiral mosque of the Kassem Darwish Fakhroo Islamic Centre, Doha, Qatar, Middle East

Souq Waqif looking towards the illuminated spiral mosque of the Kassem Darwish Fakhroo Islamic Centre, Doha, Qatar, Middle East

Souq Waqif looking towards the illuminated spiral mosque of the Kassem Darwish Fakhroo Islamic Centre, Doha, Qatar, Middle East

Souq Waqif at dusk, Doha, Qatar, Middle East

The restored Souq Waqif and spiral Mosque of the Kassem Darwish Fakhroo Islamic Centre, Qatar, Middle East

The restored Souq Waqif and spiral Mosque of the Kassem Darwish Fakhroo Islamic Centre, Qatar, Middle East

The restored Souq Waqif and spiral Mosque of the Kassem Darwish Fakhroo Islamic Centre, Qatar, Middle East

The Great Court, Trinity College, Cambridge, Cambridgeshire, England, United Kingdom, Europe

The Great Court, Trinity College, Cambridge, Cambridgeshire, England, United Kingdom, Europe

Hikers from the cablecar near the smoking summit of 3350m volcano Mount Etna during an active phase, Mount Etna, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe