1352-67 - The River Thames Flood Barrier, one of the largest movable flood barriers in the world, with Canary Wharf in the background, London, England

1348-4453 - Caspian Sea, Asia, True Colour Satellite Image. True colour satellite image of the Caspian Sea in Asia. It is bounded by Iran, Russia, Kazakhstan, Turkmenistan and Azerbaijan. The Caspian Sea is the world's largest inland sea. Composite image using LANDSAT 5 data.

805-244 - Old farmer walking with cow, carrying hand carved wooden plough on his shoulder, Majuli Island, largest riverine island in the world, in the Brahmaputra River, Assam, India, Asia

805-224 - Monk, Dankhinbat Hindu monastery, Majuli Island, largest freshwater riverine island in the world, in the Brahmaputra River, Assam, India, Asia

805-245 - Mishing tribal village house, Majuli Island, largest freshwater riverine island in the world, in the Brahmaputra River, Assam, India, Asia

832-385399 - Sadhu with red shawl on a boat on the Ganges river at sunrise, Allahabad Kumbh Mela, world's largest religious gathering, Uttar Pradesh, India, Asia

1116-44382 - Saint Peter's Basilica, The World's Largest Church, At Sunset, Vatican City, Italy

1131-1225 - Evening view of the Allahabad Kumbh Mela, World's largest religious gathering, Allahabad, Uttar Pradesh, India, Asia

1131-1217 - Allahabad Kumbh Mela camp, World's largest religious gathering, Allahabad, Uttar Pradesh, India, Asia

1304-27 - A drone shot of the Fish River Canyon, the second largest canyon in the world, Namibia, Africa

1304-30 - A drone shot of the Fish River Canyon, the second largest canyon in the world, Namibia, Africa

1304-32 - A drone shot of the Fish River Canyon, the second largest canyon in the world, Namibia, Africa

1179-1083 - Night view of Ponte 25 de Abril, one of the largest suspension bridges in the world, Lisbon, Portugal, Europe

858-2 - Muslims are taking bath at Bishwa Ijtema field. The “Bishwa Ijtema” the World or Global Congregation or Meeting is an annual Tablighi Jamaat Islamic movement congregation held at Tongi, Bangladesh by the river Turag

797-9876 - Canada, Alberta, Writing-on-Stone Provincial Park, The hoodoos and the Milk River, The park is sacred to the Blackfoot and other aboriginal tribes and is home to the largest collection of rock art on the North American prairies, Pictographs and Petroglyphs possibly 3,500 years old, Canada has applied for UNESCO World Heritage status for the site.

832-308461 - Iguacu, waterfalls, the largest waterfalls of the world, brasil

832-308490 - Iguacu, waterfalls, the largest waterfalls of the world, brasil

832-308463 - Iguacu, waterfalls, the largest waterfalls of the world, bridge for spectators, brasil

832-308462 - Iguacu, waterfalls, the largest waterfalls of the world, brasil

911-9895 - Blackfriars Bridge across the River Thames, the world's largest solar bridge, London, England, United Kingdom, Europe

911-9893 - Blackfriars Bridge across the River Thames, the world's largest solar bridge, with St. Paul's Cathedral on the skyline, London, England, United Kingdom, Europe

911-9891 - Blackfriars Bridge across the River Thames, the world's largest solar bridge, London, England, United Kingdom, Europe

911-9892 - Blackfriars Bridge across the River Thames, the world's largest solar bridge, London, England, United Kingdom, Europe

911-9894 - Blackfriars Bridge across the River Thames, the world's largest solar bridge, London, England, United Kingdom, Europe

832-186530 - Duisport, port and logistics center, Ruhrort inland port on the river Rhine, considered the world's largest inland port, Duisburg, North Rhine-Westphalia, Germany, Europe

832-186500 - Duisport, port and logistics center, Ruhrort inland port on the Rhine river, largest inland port in the world, tank farm on the Oelinsel island, Duisburg, North Rhine-Westphalia, Germany, Europe

832-186503 - Duisport, port and logistics center, Ruhrort inland port on the Rhine river, largest inland port in the world, tank farm on the Oelinsel island, Duisburg, North Rhine-Westphalia, Germany, Europe

832-186501 - Duisport, port and logistics center, Ruhrort inland port on the Rhine river, largest inland port in the world, DeCeTe container terminal, transshipment of containers to ships, road and rail, tank farm on the Oelinsel island, Duisburg, North Rhine-Westphal

832-173314 - Fish River Canyon, the second largest canyon in the world, Namibia, Africa

832-136379 - Altes Haus, Old House from 1368, one of the largest medieval half-timbered houses along the Rhine River, Bacharach, UNESCO World Heritage Site Upper Middle Rhine Valley, Rhineland-Palatinate, Germany, Europe

1116-18396 - Fulton River Sockeye Salmon spawning enhancement facility, the largest of its kind in the world, Babine River, near Granisle, British Columbia

1116-18393 - Salmon counting fence at Fulton River Enhancement Facility, the largest sockeye spawning channel in the world, Granisle, British Columbia

857-31984 - A capybara, the largest rodent in the world, in the Pantanal, the largest freshwater estuary in the world. The Pantanal is located in western Brazil, along the Paraguay River and adjacent to to the Bolivian border.

857-31986 - A cattle drive in the Pantanal, the largest freshwater estuary in the world. The Pantanal is located in western Brazil, along the Paraguay River and adjacent to to the Bolivian border.

857-31980 - Jabiru storks in the Pantanal, the largest freshwater estuary in the world. The Pantanal is located in western Brazil, along the Paraguay River and adjacent to to the Bolivian border.

826-467 - Northumberlandia, the world's largest human form sculpture, known as the Naked Lady of Cramlington, Northumberland, England, United Kingdom, Europe

975-132 - With a surface area of 68,800-úsquare kilometres (26,600-úsq-úmi), Lake Victoria is AfricaG®ös largest lake, and the largest tropical lake in the world. The Rail track meanders across Lake Victoria, just upstream from where the Victoria Nile river forms. This is the furthest point, and considered the source of the River Nile, the worldG®ös longest river. Jinja, Uganda, East Africa

911-5884 - Red gum trees in the Barmah forest, the largest stand of red gums in the world, along the banks of the Murray River, Victoria, Australia, Pacific

665-4961 - The frigate Grand Turk and three masted boat the Tenacious from Britain, the largest wooden tall ship in the world, on the River Seine during Armada 2008, Rouen, Normandy, France, Europe

29-4050 - Steel works, second largest in world, beside river, Pohang, Kyongsangbuk county, South Korea, Asia

83-10697 - Looking west from Cave 4, largest vihara in the cave site, carved from a horseshoe gorge in the Waghore River, Ajanta, UNESCO World Heritage Site, Maharashtra, India, Asia

763-397 - Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture colonial homes along Rio Tomebamba, Highlands, Ecuador