Oriol Alamany / Tourists viewing Spegazzini Glacier from a ship, Los Glaciares National Park, Patagonia, Argentina, January 2006

Tim Laman / Girl (two years) viewing a captive Mountain Lion / Puma (Felis concolor) through glass enclosure at Stone Zoo, Massachusetts, USA, November 2005, Model released

Tom Gilks / Viewing window at the Wildfowl and Wetland Trust's (WWT) London Wetland Centre with young woman birdwatching, London, UK, 2009

Edwin Giesbers / Rear view of a Siberian tiger (Panthera tigris altaica) in a captive zoo setting with children viewing the enclosure through glass, Europe

Dave Bevan / Dyfi-Ynyslas NNR wooden viewing point on reserve, inspired by the banded snail, Wales, UK

David Woodfall / Tourists viewing the Taj Mahal, tomb of Humayan, Uttar Pradesh, India, November 2008

David Woodfall / Tourists viewing the Taj Mahal, tomb of Humayan, Uttar Pradesh, India, October 2008

Oriol Alamany / Visitors viewing exhibition at the Visitor Information Centre, Wadi Rum protected Area, Jordan, April 2009

Michael Hutchinson / Tourists on viewing platform dwarfed by Iguazu falls including Garganta del Diablo (Devil's throat), Iguacu National Park, Argentina February 2009

Michael Hutchinson / People on viewing platform dwarfed by Iguazu falls, Iguacu National Park, Argentina February 2009

Michael Hutchinson / Man on viewing platform watching the Iguazu waterfall, Iguaçu National Park, Brazil

Martin Gabriel / Lake Lugano (Lago di Lugano) from viewing platform at Monte San Salvatore near Lugano, Alps, Switzerland, September 2008

Juergen Freund / Diver viewing coral reef with Featherstars, Tonga, Melanesia, Pacific

Scott Leslie / Tourists on boardwalk and viewing platform, Everglades National Park, Florida

Juan Carlos Munoz / Tourists viewing wildlife from a rainforest canopy walkway, Danum Valley forest reserve, Sabah, Borneo, Malaysia

Juan Carlos Munoz / Tourists viewing wildlife from a rainforest canopy walkway, Danum Valley forest reserve, Sabah, Borneo, Malaysia

Juan Carlos Munoz / Toruists on Canopy walkway and viewing balcony in rainforest canopy, Danum Valley reserve, Sabah, Borneo, Malaysia 2007

Juan Carlos Munoz / Tourists viewing the rainforest from the terrace of a wildlife lodge, Danum valley forest reserve, Sabah, Borneo, Malaysia 2007

Juan Carlos Munoz / Tourists viewing lowland rainforest from boat, River Sungai Kinabatangan, Sabah, Borneo, Malaysia 2007

Juan Carlos Munoz / Tourists viewing lowland rainforest from boat, River Sungai Kinabatangan, Sabah, Borneo, Malaysia 2007

Juan Carlos Munoz / Tourists viewing the canyon walls by boat, Lake Powell, Glen Canyon NP, Arizona, USA

Juan Carlos Munoz / Tourists viewing the canyon walls by boat, Lake Powell, Glen Canyon NP, Arizona, USA

Juan Carlos Munoz / Visitor viewing Dinosaurs at the Royal Tyrrell Museum, Drumheller, Alberta, Canada

Rick Tomlinson / Viewing a tabular iceberg from the crow's nest of SY "Adele", 180 foot Hoek Design, in Bransfield Strait, 17 January 2007. Non editorial uses must be cleared individually.

Michele Westmorland / Brown hyaena (Hyaena brunnea) rare viewing on the Skeleton Coast, Namibia

Luiz Claudio Marigo / Tourists viewing the Giant Water Lilies (Victoria regia) during tour to the meeting of the waters and the Amazon Rainforest, near Manaus city, Amazonas State, Northern Brazil.

Jason Smalley / Bird watchers viewing Eagle Owls, Forest of Bowland, Lancashire, UK

Jason Smalley / School children pond dipping from a viewing platform, UK

Juergen Freund / Tourist viewing the ancient aboriginal Wandjina rock art in cave, Bigge Island, Western Australia

Juergen Freund / Women viewing shark at Reef Headquarters Aquarium, Townsville, Queensland, Australia

Mark Taylor / Tourists in zodiac boat viewing icebergs. Antarctica.

Martha Holmes / Tourists viewing Grey glacier, Torres del Paine NP, Chile

Pete Oxford / Game viewing on the Zambezi river, Zimbabwe, Africa

Nick Garbutt / Tourists watching wildlife around a waterhole from viewing balcony, Mountain Lodge, Mount Kenya National Park, Kenya

Pete Oxford / Galapagos Land Iguana (Conolophus subcristatus) with tourists, Urbina Bay, Isabella Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group on beach with tourists, Espanola (Hood) Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) group on beach with tourist, Espanola (Hood) Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) sunning with three tourists, Espanola (Hood) Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) one looking at tourists, Espanola (Hood) Island, Galapagos Islands, Ecuador

Juergen Freund / Snorkeler viewing coral reef Palawan, Phillipines

Juan Manuel Borrero / People in viewing hut, Huacarpay lake, Vilcanota Mountain range, Peru 2006.

Colin Monteath / Tourists cruise past iceberg, Dumont d'Urville, Terre Adelie Land, east Antarctica

Pete Oxford / Los Gemelos or The Twins are two craters in the highlands of Santa Cruz Island, Galapagos Islands, Ecuador

Willem Kolvoort / Woman viewing shells of the Land snail {Polymita picta} showing colour variation, endemic to the far East of Cuba near Baracoa, Museum of Holguin, Cuba 1993.

Pete Oxford / Tourists using monoscope to watch birdlife from canopy observation tower, Tiputini biodiversity research, Yasuni NP, Ecuador

Richard Du Toit / Safari vehicles viewing Buffalo herd {Syncerus caffer} at dusk, South Africa

Julia Bayne / Viewing platform at Asa Wright Nature Centre, Trinidad, Caribbean, world famous not-for-profit ecolodge established in 1960s.

Jabruson / People watching Cape buffalo herd {Synceros caffer} from elephant back, rare use of African elephants for tourism viewing, Garamba NP, Democratic Republic of Congo, Central Africa

Pete Oxford / Bird viewing from boat, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Pete Oxford / Bird viewing from boats, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

E.A. KUTTAPAN / Tourists viewing wild Bengal tiger (Panthera tigris tigris) from back of domestic Indian elephant (Elephas maximus) Bandhavgarh NP, Madhya Pradesh, India

Pete Oxford / Bird viewing from boat, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Richard Du Toit / African Elephant and young (Loxodonta africana) about to cross the road infront of safari / game viewing vehicles, South Africa

Martha Holmes / Naturalists viewing game from tree hide in swamp during rainy season, Kasamka NP, Zambia.

Sharon Heald / Baby Indian elephant {Elephas maximus} captive, will be trained to carry tourists for viewing Tigers. Bandhavgarh NP, India.

Doug Perrine / Diver viewing Sponges, Bahamas

Karl Ammann / Wildlife viewing area overlooking bai / clearing in forest, Dzanga Sangha

Richard Du Toit / Tourists watching African elephants at Chobe river, Botswana

Richard Du Toit / Tourists watching African elephants from boat on Chobe river, Botswana

Roger Powell / Bird photographers viewing a European shag. Farne Islands, UK.

Flip de Nooyer / Tourists viewing cemetery at Grytviken, an abandoned whaling station, South Georgia Island

Colin Monteath / Tourists viewing large tabular icebergs from the deck of a boat, Southern Ocean, Antarctica

Colin Monteath / Tourists viewing large tabular icebergs from the deck of a boat, Southern Ocean, Antarctica

Richard Du Toit / Game viewing boats at sunset. Chobe river, Chobe NP, Botswana.

Richard Du Toit / Elephants at waterhole next to King's Pool camp, in winter, Linyanti, Botswana

Konrad Wothe / King Penguin (Aptenodytes patagonicus) colony viewed by tourists, South Georgia Island

Claus Meyer / Tourists viewing Amazon by river boat at sunset, Amazon ecosystem, Brazil

Gerry Ellis / Tourists viewing geyser pool, Lower Geyser Basin, Yellowstone National Park, Wyoming

Tui De Roy / Visitor admiring classic summit view of Pinnacle Rock and volcanic landscape, Bartolome Island, Galapagos Islands, Ecuador

Niall Benvie / Red grouse male viewing territory from fence post, Scotland

Richard Du Toit / Tourists game viewing from Hot air balloon in early morning, Pilanesberg NP, South Africa

Richard Du Toit / Tourists viewing Hippopotamus Malamala GR, South Africa

Richard Du Toit / Game viewing boat watching elephants, Chobe NP, Botswana.

Richard Du Toit / Viewing a leopard on safari {Panthera pardus} Game viewing in Africa

Richard Du Toit / Game viewing boat in Chobe NP. Chobe river, Botswana, Africa.

Richard Du Toit / Game viewing in Kruger NP. Tourism in South Africa. Wildebeest, zebra and cheetah.

Richard Du Toit / Game viewing vehicle with tourists in Chobe NP, Botswana. Game Viewing. Tourism. Africa

Richard Du Toit / Walking safari in Chobe NP, tourists viewing elephants. Botswana, Southern-Africa.

Richard Du Toit / Game viewing safari at night, tourists watching lion pride at kill. Mala Mala Game Reserve.

Jabruson / African elephants (Loxodonta africana) carrying tourists to view hippos. Garamba NP, Republic Congo (formerly Zaire), Central Africa

Mike Potts / Tourists viewing seals from boat, Blakeney point, Norfolk, U

Pete Oxford / Game viewing (African elephants) Chobe NP, Botswana, Southern Africa

Richard Du Toit / African Elephants and game viewing vehicles. Africa. Tourism

Pete Oxford / Game viewing from Indian elephants, Kaziranga National Park, Assam, India.

Staffan Widstrand / Tourist boat viewing glacier and arctic landscape Svalbard, Spitzbergen, Norway

Gavin Hellier / People viewing Grand Canyon landscape from the South Rim, Grand Canyon NP, Arizona, USA

David Kjaer / Tourists viewing seabird colonies from boat. Farne Is, Northumberland, UK

GEORGETTE DOUWMA / Tourists hiking down path viewing Hoodoos, Bryce Canyon NP, Utah, USA. Sandstone erosion

David Fleetham / Tourists in convertible car, viewing fields of taro (Colocasia esculenta) before crossing the Hanalei bridge on Kauai's northshore, Hawaii.

David Fleetham / Mother and baby viewing moon jellyfish (Aurelia aurita) at the Maui Ocean Center, Hawaii.

Rob Jordan / 2020VISION / Signs on the doors of the Philiphaugh Salmon Viewing Centre near Selkirk on the River Ettrick Water, part of the catchment of the River Tweed, Selkirkshire, Scotland, UK, October 2011

Onne van der Wal / A picture map labeling the scene of Gustavia harbour and marina below, St Barthélemy, Caribbean.

Onne van der Wal / Hikers viewing the dramatic snow covered cliff faces of Deception Island, Antarctic Peninsula.

Terry Whittaker / 2020VISION / Birdwatchers looking at birds from a viewing hide on an organised birdwatching event led by RSPB PR Officer Howard Vaughan, Rainham Marshes RSPB Reserve, RSPB Greater Thames Futurescapes Project, Rain...

Flip Nicklin / Tourists in inflatable boat viewing glacier, South Georgia Island

Scott Leslie / Tourists on boardwalk and viewing platform, Everglades National Park, Florida