Stone wall of the Window section, Arches National Park, Utah, United States of America, North America

New York Stock Exchange, Wall Street, Manhattan, New York City, New York, United States of America, North America

Old town, town wall and Cathedral at sunset, UNESCO World Heritage Site, Segovia, Castillia y Leon, Spain, Europe

Benches, Central Park, Manhattan, New York City, New York, United States of America, North America

The Mural of Quebecers, Petit Champlain Quarter, Lower Town, Quebec City, Quebec, Canada, North America

View of Palatino, Rome, Lazio, Italy, Europe

The National Theatre and houses along the Vltava River, Prague, Czech Republic, Europe

Fortress Wall, Ark of Buhkara, Buhkara, Uzbekistan

The Great Wall of China, UNESCO World Heritage Site, Juyongguan Pass, China, Asia

Annecy, Savoie, France

Illuminated Charles Bridge, UNESCO World Heritage Site, Prague, Bohemia, Czech Republic, Europe

Windowsill, Paleohora, Crete, Greece, Europe

Sycamore Gap, location for scene in the film Robin Hood Prince of Thieves, Hadrian's Wall, UNESCO World Heritage Site, Nothumberland, England, United Kingdom, Europe

Sheikh Lutfullah (Sheikh Lotfollah) Mosque, Isfahan (Esfahan), Iran, Middle East

Masjid-e-Iman Mosque (Imam Mosque) (Masjed-e Emam), formerly Shah Mosque, Isfahan (Esfahan), Iran, Middle East

Masjid-e-Iman Mosque (Imam Mosque) (Masjed-e Emam), formerly Shah Mosque, Isfahan (Esfahan), Iran, Middle East

Masjid-e-Iman Mosque (Imam Mosque) (Masjed-e Emam), formerly Shah Mosque, Isfahan (Esfahan), Iran, Middle East

Anchored cliff wall, coast stabilisation, Sandown, Isle of Wight, England, United Kingdom, Europe

Detail of tilework, the Royal Palace, Fez, Morocco, North Africa, Africa

North bastion, town walls, Essaouira, Morocco, North Africa, Africa

Woman painting designs on her house, Tonk region, Rajasthan state, India, Asia

Geometric designs on walls of a village house, near Jaisalmer, Rajasthan state, India, Asia

Close-up of wall painting (fresco) of St. George, St. Barbara Church, Goreme Open Air Museum, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Religious wall paintings (frescoes), Sandal Church, Goreme Open Air Museum, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Close-up of wall paintings (frescoes), of Emperor Constantine and Teodosia holding the true cross, St. Barbara Church, Goreme Museum, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Gaudi achitecture, steps and walls, Gaudi Guell Park, Barcelona, Catalonia (Cataluna) (Catalunya), Spain, Europe

Gaudi achitecture and gardens, Gaudi Guell Park, Barcelona, Catalonia (Cataluna) (Catalunya), Spain, Europe

Mural of a nude woman, blindfolded man and musicians painted on the Berlin Wall in Berlin, Germany, Europe

Bougainvillea along wall next to sea, Malindi, Kenya, East Africa, Africa

Women in bright dresses and head scarves in the new clothes market within the Old City wall of Bukhara, Uzbekistan, Central Asia, Asia

Women in bright dresses and head scarves in the new clothes market within the Old City wall of Bukhara, Uzbekistan, Central Asia, Asia

Man walks by the azulejo tile panel of the Carmo church in Oporto, Portugal, Europe

The Lararium, wall paintings in the House of the Vettii in Pompeii, UNESCO World Heritage Site, Italy, Europe

Close-up of decorated wall, Marrakesh's Pacha Past Palace, Taourirt Kasbah, Ouarzazate, Morocco, North Africa, Africa

Close-up of decorative tiles on a brick building in Lahore, Pakistan, Asia

Close-up of mural on wall of building showing Bill Bates humorous town plan of Carmel by the Sea, California, United States of America, North America

Hole in the Wall, Coffee Bay, Transkei, Wild Coast, South Africa, Africa

Clothes on a washing line outside an old house with peeling walls at Corleone on the island of Sicily, Italy, Europe

Dragons on tiles on the Dragon wall in the Forbidden City in Beijing, China, Asia

King Arthur's Round Table mounted on wall of Castle Hall, Winchester, England, United Kingdom, Europe

Shepherd by the town walls, Essaouira, Morocco, North Africa, Africa

Old city wall and York Minster, York, Yorkshire, England, United Kingdom, Europe

Backs of tall mud brick houses showing holes in the wall for toilets, the walled city of Shibam, UNESCO World Heritage Site, Wadi Hadramaut, south Yemen, Middle East

Decorated cliff wall at Dogon ritual site, Songo Village, UNESCO World Heritage Site, Bandiagara Escarpment, Dogon Area, Mali, Africa

Hasidic Jew praying (reciting) at the Western Wall (Wailing Wall), Jerusalem, Israel, Middle East

Typical architecture, Segou, Mali, Africa

Wheel of life wall art, Tikse (Tiksay) gompa (monastery), Tikse (Tiksay), Ladakh, Indian Himalaya, India, Asia

Paved roadway, Via Praetoria, and soldiers quarters, Roman settlement and fort at Vindolanda, Roman Wall south, UNESCO World Heritage Site, Northumbria, England, United Kingdom, Europe

Puymartin castle, Dordogne, Aquitaine, France, Europe

Hadrian's Wall, UNESCO World Heritage Site, Northumberland, England, United Kingdom, Europe

Waves pounding sea wall and rail track in storm, Dawlish, Devon, England, United Kingdom, Europe

Jews praying at the Western Wall, Jerusalem, Israel, Middle East

Castillo de San Gabriel, Arrecife, Lanzarote, Canary Islands, Spain, Atlantic, Europe

Vew across the Alcazaba showing the Barrio Castrense to the right, Alhambra, UNESCO World Heritage Site, Granada, Andalucia, Spain, Europe

Lago Argentino, El Calafate, Patagonia, Argentina, South America

Inca ruins, Machu Picchu, UNESCO World Heritage Site, Peru, South America

Restored section of the Great Wall (Changcheng), northeast of Beijing, Mutianyu, China, Asia

Great Bath of the Citadel from south, Indus Valley civilization, Mohenjodaro, UNESCO World Heritage Site, Sind (Sindh), Pakistan, Asia

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

Housesteads, Hadrian's Wall, Northumberland, England, UK

Zennor, near St. Ives, Cornwall, England, UK, Europe

The Great Wall of China, UNESCO World Heritage Site, Beijing, China, Asia

Helmsley Castle dating from the 12th century, North Yorkshire, England, UK, Europe

The Great Wall of China, UNESCO World Heritage Site, Beijing, China, Asia

Spring blossom and Himeji Castle (Himeji-jo), built in 1580, UNESCO World Heritage Site, Himeji, west Honshu, Japan, Asia

The One Pillar Pagoda (Chua Mot Cot), built in 1049 to resemble a lotus blossom, Hanoi, Vietnam, Indochina, Southeast Asia, Asia

Detail of traditional sun clock (sun dial) on the exterior wall of a building, Zell am See, Salzburgland, Austria, Europe

Glass mosaic of tree of life on wall of the 16th century Sim, Wat Xiang Thong, Luang Prabang, UNESCO World Heritage Site, Laos, Indochina, Southeast Asia

The Great Wall at Mutianyu, UNESCO World Heritage Site, near Beijing, China, Asia

Hadrian's Wall, UNESCO World Heritage Site, Northumbria, England, U.K., Europe

Ruins of Inca city in morning light, Machu Picchu, UNESCO World Heritage Site, Urubamba Province, Peru, South America

Monkey skulls embedded in mud wall to protect against evil spirits, Dogon village of Telle, UNESCO World Heritage Site, Mali, Africa

Remains of the Indus civilization, archaeological site of Mohenjodaro, UNESCO World Heritage Site, Pakistan, Asia

Wall paintings in the tomb of Rehunire (Rekhmire), Valley of the Nobles, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Interior of the tomb of Horemheb, Valley of the Kings, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Wall paintings in the tomb of Menna, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Wall paintings in the tomb of Sennejem (Sinjin), Deir el Medina, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Wall painting showing harvesting grain, tomb of Sennejem (Sinjun), Deir el Medina, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Painted ceiling, the harem, Tash Khauli Palace, Khiva, Uzbekistan, Central Asia, Asia

Matsuyama castle, Matsuyama city, Shikoku, Japan, Asia

Bab al Yemen, Old Town, Sana'a, UNESCO World Heritage Site, Republic of Yemen, Middle East

Example of traditional Zardozi gold embroidery work and stenciled wall decoration, Lutyens style bungalow, New Delhi, India, Asia

Painted ceiling and wall detail, with original old stained glass windows, Mehrangarh Fort, Jodhpur, Rajasthan state, India, Asia

Detail of exquisite wall painting in the Sheesh Mahal (hall), Samode Palace, Samode, Rajasthan state, India, Asia

Detail of the exquisite wall painting in the Grand Durbar Hall, Samode Palace, Samode, Rajasthan state, India, Asia

Example of the exquisite wall painting in the Sultan Mahal (hall), Samode Palace, Samode, Rajasthan state, India, Asia

Detail of the fine mirror and plaster work found in the Sheesh Mahal (mirrored hall), The City Palace, Jaipur, Rajasthan state, India, Asia

Detail of the coloured glass and mirror work in the audience chamber in the palace, The City Palace, Jaipur, Rajasthan state, India, Asia

Chanwar Palki Walon-Ki Haveli (mansion), 400 years old, restored to its original state, Anokhi Museum, Amber, near Jaipur, Rajasthan state, India, Asia

Chanwar Palki Walon-Ki Haveli (mansion), 400 years old, restored to its original state, Anokhi Museum, Amber, near Jaipur, Rajasthan state, India, Asia

Chanwar Palki Walon-Ki Haveli (mansion), 400 years old, restored to its original state, Anokhi Museum, Amber, near Jaipur, Rajasthan state, India, Asia

Syrian Christian church, Cheria Palli (small St. Mary's), side wall and barrel vault paintings said to date from 1579 foundation, paintings behind altar are later, Kottayam, Kerala state, India, Asia

Hadrian's Wall, UNESCO World Heritage Site, in snowy landscape, Northumberland, England, United Kingdom, Europe

Dry stone wall, gate and stone cottages, Snowshill village, The Cotswolds, Gloucestershire, England, United Kingdom, Europe

Jew wearing prayer shawl blessing the Lulav and Etrog (palm frond), Sukot (Festival of Booths), Western Wall, Jerusalem, Israel, Middle East

Checkpoint Charlie, border control, West Berlin, Berlin, Germany, Europe

The Great Wall of China, UNESCO World Heritage Site, near Beijing, China, Asia

Mosque of the Barber, Kairouan, UNESCO World Heritage Site, Tunisia, North Africa, Africa

Wall paintings, Villa of the Mysteries, Pompeii, UNESCO World Heritage Site, Campania, Italy, Europe

Wall paintings, Tomb of Septah, Valley of the Kings, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa