At first sight, the aqua terra zoo is almost disguised by its distinctive building: an old flak tower from the Second World War.With its impressive height of 50 metres, the tower is an eye-catching structure, which has found a new, much brighter purpose. Here, visitors can explore a lively and colourful world in over 11 floors. Marketing manager Philipp Heinzl enthuses:“One of our highlights is certainly our reef with the sea surge. Countless richly coloured tropical fish hurry around the precious coral reef. Thanks to our half-tunnel created through the use of a bent glass pane, guests can stand right at the centre of the action.”