West Gate, dating from the 14th century, the only surviving city gate, Canterbury, Kent, England, UK

The Oyster Union House, Blackstone Block, built in 1714, one of Boston's oldest surviving streets, Boston, Massachusetts, USA

Little water channel in Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

Vicar's Close, dating from the 14th century, the oldest surviving purely residential street in Europe, Wells Somerset, England, United Kingdom, Europe

Our Lady Maria Cathedral, Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

Inside the Our Lady Maria Cathedral, Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

St. Catharina's Abbey in Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

The surviving pool in the normally dry riverbed, thought to be a spring from bedrock so was named Alice Springs, in the town of the same name, Alice Springs, Northern Territory, Australia, Pacific

First Congregational church, Paul Revere Bell, one of only 37 surviving bells made at Revere's foundry during his lifetime, Woodstock, Vermont, New England, USA, North America

View over Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

Noratus cemetery, the largest surviving cemetery with khachkars in Armenia, near Lake Sevan, Gegharkunik region, Armenia, Eurasia

The Bell of Hope gifted in 2002 by a church in London in memory of those killed in the 9/11 terrorist attacks, outside St. Paul's Chapel, the oldest surviving public building in the city, New York City, United States of America, North America

The Detlav Rohwedder Haus, completed in 1936, one of few surviving wartime buildings, with post war East German mural by Max Lingner, Wilhelmstrasse, Berlin, Germany, Europe

The last surviving wooden wind pump in the Fens at Wicken Fen National Nature Reserve, Cambridgeshire, East Anglia, England, United Kingdom, Europe

Panoramic view of surviving structures and ancient ruins in the Roman Forum, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Yaquina Head lighthouse, the tallest of Oregon's nine surviving 19th century lighthouses, Oregon, United States of America, North America

Stranahan House, the oldest surviving building in Broward County, now a museum, Downtown, Fort Lauderdale, Florida, United States of America, North America

Panoramic view of surviving structures and the Arch of Septimius Severus in the Roman Forum, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Saint Nicholas Chapel, England's largest surviving Parochial chapel from the 15th century, Kings Lynn, Norfolk, England, United Kingdom, Europe

Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

Pedestrian zone with the historic houses in Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

Outdoor restaurant in Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

Buddha images, Youqson Kyaung (Yoke-son), the oldest surviving wooden monastery in the Bagan area now a museum, containing religious objects from the Konbaung era, Salay (Sale), Myanmar (Burma), Asia

Youqson Kyaung (Yoke-Sone Kyaung) the oldest surviving wooden monastery in the Bagan area, now a museum containing articles from the Konbaung period, Salay (Sale), Myanmar (Burma), Asia

The 13th century Medieval Merchants House is one of the oldest surviving merchant houses in England, Southampton, Hampshire, England, United Kingdom, Europe

Grey squirrel eats banana skin from rubbish bin in Hampstead Heath, London, United Kingdom

Giant tortoise feeding on leaves on the Galapagos Islands

Land iguana camouflaged among cactus plants and feeding on leaf, Galapagos Islands, Ecuador

Giant tortoise feeding on leaves on the Galapagos Islands

Grey squirrel on edge of rubbish bin in Hampstead Heath, North London, United Kingdom

Youqson Kyaung (Yoke-Sone Kyaung) the oldest surviving wooden monastery in the Bagan area, now a museum containing articles from the Konbaung Period, Salay (Sale), Myanmar (Burma), Asia

Pedestrian zone with the historic houses in Ribe, Denmark's oldest surviving city, Jutland, Denmark, Scandinavia, Europe

A view of the Titanic Museum, with the SS Nomadic, the only surviving White Star Line ship, in the Titanic Quarter, Belfast, Ulster, Northern Ireland, United Kingdom, Europe

Sign on the Walking Tour of the Historic Hill at The Great Friends Meeting House dating from 1699, a Quaker building in the Postmedieval English vernacular style, oldest surviving house of worship in town, on Farewell and Marlborough Streets in historic Newport, Rhode Island, New England, United States of America, North America

The Union Oyster House, Blackstone Block, built in 1714, one of Boston's oldest surviving streets, Boston, Massachusetts, New England, United States of America, North America

The 13th century Broad Gate, the only surviving medieval gate, Ludlow, Shropshire, England, United Kingdom. Europe

The Theatre Royal, only surviving Regency Theatre in the country, Westgate Street, Bury St. Edmunds, Suffolk, England, United Kingdom, Europe

India visits to post, tsunami site in srayickadu kollom, kerala, where cnewa funds relief efforts through the social services office of the syro, malankar church. Family of shaji gobal (47), fisherman, his wife jayasree (38) and their surviving daughter shinthu (15). They lost their other daughter, chikku (17) in the disaster. Note that the new house which they are in was built and donated by the matha amrithanandamayi mssion ashram, as were 1300 other houses in the area. Cnewa had managed to build one house during the 13 months since the disaster. Sp1140194

Cows surviving outside during the late March 2013 extreme weather event, near Hawkshead, Lake District, Cumbria, England, United Kingdom, Europe

Humans and wildlife struggling in Antarctic snowdrift. Commonwealth Bay, East Antarctica.

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Mountaineers surviving atrocious conditions on Cairngorm, Scotland, United Kingdom, Europe

Logo UNESCO United Nations Educational, Scientific and Cultural Organization

Christ Church with historic cemetery, oldest surviving church in New Zealand, Russell, Bay of Islands, Far North District, Northland, North Island, New Zealand, Oceania

Christ Church with historic cemetery, oldest surviving church in New Zealand, Russell, Bay of Islands, Far North District, Northland, North Island, New Zealand, Oceania

View taken from behind of silhouettes of two blue wildebeest (Connochaetes taurinus) standing on the savanna watching a cheetah (Acinonyx jubatus) pass by, Serengeti National Park, Tanzania, Africa

Dried footprints across Deadvlei, Sossusvlei, Namib-Naukluft Park, Namibia

Close-up portrait of a lilac-breasted roller (Coracias caudatus) standing on a termite mound tosses insect on mound, Serengeti National Park, Tanzania, Africa

A Yucca plant growing in the white sand, White Sands National Monument, Alamogrodo, New Mexico, United States of America

Close-up of an African bush elephant (Loxodonta africana) drinking from grassy waterhole with its trunk curled into its mouth on the savanna in Etosha National Park; Otavi, Oshikoto, Namibia

Close-up of an African bush elephant (Loxodonta africana) drinking from grassy waterhole with its trunk curled into its mouth on the savanna in Etosha National Park; Otavi, Oshikoto, Namibia

African bush elephant (Loxodonta africana) drinking from grassy waterhole on the savanna in Etosha National Park looking at camera; Otavi, Oshikoto, Namibia

Close-up of black rhinoceros (Diceros bicornis) standing beside a rocky waterhole eyeing the camera in the Etosh National Park; Otavi, Oshikoto, Namibia

Close-up of black rhinoceros (Diceros bicornis) standing beside a rocky waterhole eyeing the camera in the Etosh National Park; Otavi, Oshikoto, Namibia

African bush elephant (Loxodonta africana) wading through the mud and drinking from grassy waterhole on the savanna in Etosha National Park looking at camera; Otavi, Oshikoto, Namibia

White Rhinoceros (Ceratotherium simum) walks through the long grass across the savanna in profile in the Etosha National Park at sunset; Otavi, Oshikoto, Namibia

A black-billed magpie (Pica hudsonia) picks the bones of a dead Dall sheep killed by wolves in Chugach State Park, Alaska, United States of America

African bush elephant (Loxodonta africana) drinking from grassy waterhole with its trunk curled into its mouth on the savanna in Etosha National Park; Otavi, Oshikoto, Namibia

A Hedgehog Cactus blooms between two rocks in Joshua Tree National Park, California, United States of America

Black rhinoceros (Diceros bicornis) drinking from a waterhole in the haze in the Etosh National Park; Otavi, Oshikoto, Namibia

Red kangaroo (Macropus rufus) in Flinders Ranges National Park in Australia. The Red kangaroo is the largest surviving marsupial and one of the icons of Australia. Australia, South Australia