United Kingdom - The Deep

The Deep is a large underwater aquarium situated at Sammy's Point, at the confluence of the River Hull and the Humber estuary in Hull, England. It opened in March 2002.

Billed as 'the world's only submarium', the tanks contain thousands of sea creatures (including seven species of shark), 2.5 million litres of water and 87 tonnes of salt housed in an iconic structure designed by Sir Terry Farrell and built as part of the UK National Lottery's Millennium Commission project.

So far the deep has welcomed over 2 million visitors from around the world.

As well as a tourist attraction, The Deep is a centre for marine research. Behind the scenes a team of dedicated marine biologists look after all of the animals in The Deep’s collection as well as carrying out vital research into the marine environment.

The Deep also has a very active education program with an average of 20,000 school visits a year passing through its three dedicated classrooms.

The Deep is the most successful millennium project in the Country.

--Wikipedia.org