The AquaDom (mixed Latin and German: 'water dome', more formally 'water cathedral') was a 25-metre-tall (82 ft) cylindrical acrylic glass aquarium with built-in transparent elevator inside the lobby of the Radisson Collection Hotel in the DomAquarée complex at Karl-Liebknecht-Straße in Berlin-Mitte, Germany.

[4] The acrylic cylinder was manufactured by International Concept Management, Inc. using Reynolds Polymer Technology panels, with architecture drawings provided by Sergei Tchoban.

Sandra Weeser, a member of Germany's Bundestag staying at the hotel at the time, described awakening to "a kind of shock wave".

[13] Berlin's Technisches Hilfswerk (THW) rescue team mounted a full-scale deployment,[14] completing operations 12 hours later — with the hotel's lobby and atrium remaining devastated, described by onlookers as resembling a battlefield.

[23] Catastrophic failures and major leaks have occurred at numerous large acrylic tanks, including failures at the T-Rex Café at Disney Springs in Orlando; the Dubai Aquarium at the Dubai Mall; the Orient Shopping Center, Shanghai; the Gulfstream Casino, Hallandale Beach, Florida; at the Lotte Tower, Seoul, South Korea and at the Mazatlan, Mexico Aquarium.