Ironbridge, the world's first iron structure dating from 1779, designed by Abraham Darby, Ironbridge Gorge, UNESCO World Heritage Site, River Severn, Shropshire, England, United Kingdom, Europe

Giant Buddha statue, 71 metres high, Leshan, UNESCO World Heritage Site, Sichuan Province, China, Asia

The Cathedral of Our Lady, UNESCO World Heritage Site, Tournai, Belgium, Europe

Harlech Castle, UNESCO World Heritage Site, Gwynedd, Wales, United Kingdom, Europe

Effigy of Thomas a Becket, Archbishop of Canterbury, Canterbury Cathedral, UNESCO World Heritage Site, Canterbury, Kent, England, United Kingdom, Europe

Cerro Concepcion, UNESCO World Heritage Site, Valparaiso, Chile, South America

House in Cerro Concepcion, UNESCO World Heritage Site, Valparaiso, Chile, South America

House in Cerro Concepcion, UNESCO World Heritage Site, Valparaiso, Chile, South America

Costumes and masks during Venice Carnival, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

People hiking in Monk's Cowl Nature Reserve with Champagne Castle in background, Ukhahlamba-Drakensberg Park, UNESCO World Heritage Site, KwaZulu-Natal, South Africa, Africa

People hiking in Monk's Cowl Nature Reserve with Champagne Castle in background, Ukhahlamba-Drakensberg Park, UNESCO World Heritage Site, KwaZulu-Natal, South Africa, Africa

The Great Wall of China at Badaling, UNESCO World Heritage Site, China, Asia

Mahabodhi Temple, UNESCO World Heritage Site, Bodh Gaya (Bodhgaya), Gaya District, Bihar, India, Asia

Red sandstone cliffs of Ladram Bay on the Jurassic Coast, UNESCO World Heritage Site, Devon, England, United Kingdom, Europe

Inside the Mahabodhi Temple, UNESCO World Heritage Site, Bodh Gaya (Bodhgaya), Gaya District, Bihar, India, Asia

Monk, Mahabodhi Temple, UNESCO World Heritage Site, Bodh Gaya (Bodhgaya), Gaya District, Bihar, India, Asia

Basilica de Nuestra Senora de Guanajuato and University building, Guanajuato, UNESCO World Heritage Site, Guanajuato state, Mexico, North America

Mahabodhi Temple, UNESCO World Heritage Site, Bodh Gaya (Bodhgaya), Gaya District, Bihar, India, Asia

Stairway gallery, the Buddhist Fragrance Pavilion, Summer Palace, UNESCO World Heritage Site, Beijing, China, Asia

Pyramid I, Calakmul, UNESCO World Heritage Site, Calakmul Biosphere Reserve, the largest tropical forest reserve in Mexico, Campeche, Mexico, North America

Alte Kapelle, Regensburg, UNESCO World Heritage Site, Bavaria, Germany, Europe

Statue of Nyoirin-kannon, Todaiji Temple, Nara, UNESCO World Heritage Site, Japan, Asia

Torii Gate, Itsukushima Shrine, UNESCO World Heritage Site, Miyajima Island, Japan, Asia

Statue of Buddha, Todaiji Temple, Nara, UNESCO World Heritage Site, Japan, Asia

Torii Gate, Itsukushima Shrine, UNESCO World Heritage Site, Miyajima Island, Japan, Asia

Buddha statues in Tokondo (Eastern Golden Hall), Kofukuji Temple, Nara, UNESCO World Heritage Site, Japan, Asia

Mutianyu, Great Wall of China, UNESCO World Heritage Site, Mutianyu, China, Asia

Interior walls and ceiling, St. Isaac's Cathedral, UNESCO World Heritage Site, St. Petersburg, Russia, Europe

Warriors, Terracotta Army, UNESCO World Heritage Site, Xian, Shaanxi, China, Asia

Great Wall of China, UNESCO World Heritage Site, Mutianyu, China, Asia

Interior fresco of The Last Supper, St. Isaac's Cathedral, UNESCO World Heritage Site, St. Petersburg, Russia, Europe

The Tower of Belem (Torre de Belem), the 16th century Manueline fortress, UNESCO World Heritage Site, on the River Tagus (Rio Tejo), Belem, Lisbon, Portugal, Europe

Mirror reflections at Herbert Lake in the Canadian Rockies, Banff National Park, UNESCO World Heritage Site, Alberta, Canada, North America

Interior, ceiling with belfry, St. Isaac's Cathedral, UNESCO World Heritage Site, St. Petersburg, Russia, Europe

Anasazi Ruins, Cliff Palace, dating from between 600 AD and 1300 AD, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Arabic doorway in Stone Town, UNESCO World Heritage Site, Zanzibar Island, Tanzania, East Africa, Africa

Stelae A dating from 731 AD depicting Rabbit 18, Copan Ruins, Mayan archaeological site, UNESCO World Heritage Site, Honduras, Central America

Cathedral, historical old town, UNESCO World Heritage Site, Panama City, Panama, Central America

View over the beautiful mountains around the Citadelle Laferriere, UNESCO World Heritage Site, Cap Haitien, Haiti, Caribbean, Central America

Sagrada Familia, UNESCO World Heritage Site, Barcelona, Catalonia, Spain, Europe

Sagrada Familia, UNESCO World Heritage Site, Barcelona, Catalonia, Spain, Europe

Ironbridge Gorge and River Severn in evening, winter, UNESCO World Heritage Site, Shropshire, England, United Kingdom, Europe

Detail of sculpture, Bayon temple, dating from the 13th century, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Detail of sculpture, Bayon temple, dating from the 13th century, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Monastery of the Holy Trinity (Agia Triada), Meteora, UNESCO World Heritage Site, Greece, Europe

Close-up of relief sculpture of Apsara, heavenly dancer of the Khmer Kingdom, Angkor Wat temple, dating from the 12th century, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Close-up of relief sculpture of Apsara, heavenly dancer of the Khmer Kingdom, Angkor Wat temple, dating from the 12th century, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Detail of door of the temple, National Museum, Vat Ho Pha Bang, Luang Prabang, UNESCO World Heritage Site, Laos, Indochina, Southeast Asia, Asia

The Bas Relief Galleries depicting scenes from the Ramayana, Angkor Wat, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Bayon Temple, Angkor Thom, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

El Castillo pyramid (Temple of Kukulcan) in the ancient Mayan ruins of Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

El Castillo pyramid (Temple of Kukulcan) in the ancient Mayan ruins of Chichen Itza, UNESCO World Heritage Site, Yucatan, Mexico, North America

Cuadrangulo de las Monjas (Nuns' Quadrangle) at Mayan archaeological site, Uxmal, UNESCO World Heritage Site, Yucatan State, Mexico, North America

Pyramid of the Magician and Cuadrangulo de las Monjas (Nuns' Quadrangle) at Mayan archaeological site, Uxmal, UNESCO World Heritage Site, Yucatan State, Mexico, North America

Hadrians Wall near Cawfields Quarry, UNESCO World Heritage Site, Northumberland, England, United Kingdom, Europe

Sunrise at Summer Solstice celebrations, Stonehenge, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

Ruins of St. Paul's Church, UNESCO World Heritage Site, Macau, China, Asia

Place el Hedim, Bab Mansour, Meknes, UNESCO World Heritage Site, Morocco, North Africa, Africa

Place el Hedim, Bab Mansour, Meknes, UNESCO World Heritage Site, Morocco, North Africa, Africa

Attarine Mosque, Fez, UNESCO World Heritage Site, Morocco, North Africa, Africa

Casa Mila (La Pedrera) by Gaudi, UNESCO World Heritage Site, Barcelona, Catalonia, Spain, Europe

Quay at St Mark's Square with gondolas and the view to San Giorgio Maggiore Island, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

Angel Falls, Canaima National Park, UNESCO World Heritage Site, Guayana Highlands, Venezuela, South America

View of Angel Falls from Mirador Laime, Canaima National Park, UNESCO World Heritage Site, Guayana Highlands, Venezuela, South America

Angel Falls at dawn, Canaima National Park, UNESCO World Heritage Site, Guayana Highlands, Venezuela, South America

Blue Mosque (Sultan Ahmed Mosque), UNESCO World Heritage Site, and Sultanahmet Square fountain at night, Istanbul, Turkey, Europe

Colosseum, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Ahu Tongariki, Rapa Nui (Easter Island), UNESCO World Heritage Site, Chile, South America

Sally Lightfoot crab (Grapsus Grapsus), Sullivan Bay, Isla Santiago, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Pinnacle Rock, Isla Bartholome, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Gothic Basilica del Voto Nacional, old town, UNESCO World Heritage Site, Quito, Ecuador, South America

Gothic Basilica del Voto Nacional, old town, UNESCO World Heritage Site, Quito, Ecuador, South America

Bet Giyorgis church, Lalibela Rock Hewn Churches, UNESCO World Heritage Site, Northern Ethiopia, Africa

Bet Golgotha and Bet Mikael churches, Lalibela Rock Hewn Churches, UNESCO World Heritage Site, Northern Ethiopia, Africa

View of St. Anna Bay looking towards colonial merchant houses lining Handelskade along Punda's waterfront, UNESCO World Heritage Site, Willemstad, Curacao, West Indies, Lesser Antilles, former Netherlands Antilles, Caribbean, Central America

Dome of the Rock, UNESCO World Heritage Site, East Jerusalem, Israel, Middle East

The 17th century Baroque Cathedral of St. Rupert and St. Vergilius, Marian Statue, Salzburg, UNESCO World Heritage Site, Austria, Europe

Huwon, The Secret Garden, pavilions around a square lily pond, Changdeokgung Palace in summer, UNESCO World Heritage Site, Seoul, South Korea, Asia

Aerial view of the Jinshanling and Simatai sections of the Great Wall of China, Unesco World Heritage Site, China, East Asia

Sunset over the Jinshanling and Simatai sections of the Great Wall of China, Unesco World Heritage Site, China, East Asia

Jinshanling and Simatai sections of the Great Wall of China at sunset, Unesco World Heritage Site, China, East Asia

Elevated view of the Jinshanling and Simatai sections of the Great Wall of China, Unesco World Heritage Site, China, East Asia

Steps and path on the Jinshanling and Simatai sections of the Great Wall of China, Unesco World Heritage Site, China, East Asia

Sunlit Jinshanling and Simatai sections of the Great Wall of China, Unesco World Heritage Site, China, East Asia

Snow covered Jinshanling and Simatai sections of the Great Wall of China, Unesco World Heritage Site, China, East Asia

Temple Complex of Angkor Wat, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Interior of Church of the Savior on Spilled Blood (Church of the Resurrection), UNESCO World Heritage Site, St. Petersburg, Leningrad Oblast, Russia, Europe

Woman in sari walking in Mehtab Bagh with Taj Mahal in background, UNESCO World Heritage Site, Agra, Uttar Pradesh, India, Asia

Woman in sari at Taj Mahal, UNESCO World Heritage Site, Agra, Uttar Pradesh, India, Asia

Durdle Door beach on the Jurassic Coast in winter, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Foreboding evening skies above the immense Caernarfon Castle, UNESCO World Heritage Site, Caernarfon, Gwynedd, North Wales, Wales, United Kingdom, Europe

Old Harry Rocks at Handfast Point, the start of the Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Durdle Door beach on a gorgeous sunny evening, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Parson's Barn and The Pinnacles from Handfast Point, Jurrasic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Durdle Door on a beautiful sunny day, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Kimmeridge Bay and Clavell Tower, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

The Parson's Barn rock stack near Handfast Point, Ballard Down, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Canterbury Cathedral, UNESCO World Heritage Site, Canterbury, Kent, England, United Kingdom, Europe

Canterbury Cathedral, UNESCO World Heritage Site, with nativity diorama at dusk, Canterbury, Kent, England, United Kingdom, Europe

Canterbury Cathedral, UNESCO World Heritage Site, Canterbury, Kent, England, United Kingdom, Europe