The Haus des Meeres public aquarium, a former German World War Two anti-aircraft flak tower in Esterhazypark, Vienna, Austria.

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Size: 2395px × 3624px
Location: Esterhazypark, Stiftskaserne, Vienna, (Wien) Austria
Photo credit: © Maurice Savage / Alamy / Afripics
License: Licensed
Model Released: No

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