A zoo is a facility in which animals are kept within enclosures for public exhibition and often bred for conservation purposes.
Sea lion and keeper at the Welsh Mountain Zoo
The Tower of London housed England's royal menagerie for several centuries (Picture from the 15th century, British Library).
The Versailles menagerie during the reign of Louis XIV in the 17th century
Bristol Zoo was a zoo in the city of Bristol in South West England. The zoo's stated mission was to "maintain and defend" biodiversity through breeding endangered species, conserving threatened species and habitats and promoting a wider understanding of the natural world".
Main entrance
South American fur seal seen through the observation windows at Seal and Penguin Coasts, Bristol Zoo.