The Royal Aquarium features in PG 7 and was a Westminster entertainment venue built in 1876. The aquarium itself never took off - the water tanks ran into problems and it was a standing joke that the aquarium never contained any fish.
In a bid to attract visitors the aquarium put on dangerous acts such as Zazel the human cannonball (a 14 year old girl) and the tightrope walker, The Great Farini. After a while the aquarium developed a seedy reputation and ladies of ‘elastic virtue’ were said to frequent the place. It closed in 1902, its theatre - managed by Lillie Langtry - lasted until 1907.