They say that having a fish tank is relaxing, well the Radisson Blu Berlin have taken this to another level.   Rising out of the lobby like a massive glass monolith, you will find the world’s largest cylindrical fish tank.  It towers 25 metres into the air and with a diameter of 11.56 metres holds over a million litres of sea water, home to 2600 fish from 56 different species.  

If that is not impressive enough, it houses a glass elevator in the middle of the tank allowing guests an immersive 360 degree view.