London Zoo is the world’s oldest scientific zoo. It was opened in London on 27 April 1828, and was originally intended to be used as a collection for scientific study. It was eventually opened to the public in 1847. Wikipedia.
Prices are usually around 23 pounds for adults. But if you take the Little Italy river boat, you can pay 25 pounds which includes the entrance to the zoo and the boat fare. You can get the boat from either Camden Lock or Little Venice. The boat lets you off INSIDE the zoo, so you must buy the zoo tickets from the boat operator. Check here for more: http://www.londonwaterbus.com/
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