Kerstin Hinze / Aerial view of Hanseatic City of Lubeck, water-enclosed Old Town, UNESCO World Cultural Heritage, Schleswig-Holstein, Germany, May 2012

Diane McAllister / Beautiful sunbird (cinnyris pulchella) male bracing itself on a swinging purse-shaped enclosed nest while feeding its young, Serengeti NP, Tanzania

Mark Brownlow / Aerial view of huts and enclosed garden, Papua New Guinea, August 2007

Pete Oxford / Jaisalmer Fort which stands 76m above the town of Jaisalmer and is enclosed by a 9km wall. Rajasthan, India, 2006

Pete Oxford / Jaisalmer Fort which stands 76m above the town of Jaisalmer and is enclosed by a 9km wall. Rajasthan, India, 2006

Pete Oxford / View from Jaisalmer Fort which stands 76m above the town of Jaisalmer and is enclosed by a 9km wall. Rajasthan, India, 2006

Tony Phelps / Viviparous lizard newborn enclosed in pellicle {Lacerta / Zootoca vivipara}, Dorset, UK

Jose B. Ruiz / Breeding instalations for water birds, conservation effort, Sevilla, Donana, Spain

Philip Stephen / Fishing vessel undergoing painting and maintenance in an enclosed ship lift facility at Peterhead harbour. May 2005.