Ofaya daga cikin kayan adon gine-ginen da Wasannin Olympics na 2008 ya kasance Cibiyar Ruwa ta Kasa ta Beijing, kuma bisa hukuma an san shi da Cibiyar Ruwa ta andasa kuma an fi sani da suna A Cube na ruwa.
Cibiya ce ta ruwa wacce aka gina kusa da filin wasa na kasa na Beijing a cikin filin shakatawa na Olympic don wasannin gasa a cikin waɗannan wasannin Olympics.
Duk da sunan laƙabin sa, ginin ba ainihin kwalliya bane, amma ana daidaita shi (akwatin mai kusurwa huɗu). An fara ginin ne a 2003, aka kammala Cibiyar kuma aka kawo ta don amfani a ranar 28 ga Janairun 2008. Gaskiyar ita ce a can masu ninkaya suka karya tarihin duniya 25 a lokacin wasannin Olympics.
Bayan taron duniya, an yi ginin yuan miliyan 200 don mayar da rabin cikinsa zuwa wurin shakatawar ruwa har sai da aka sake bude shi a hukumance a ranar 8 ga Agusta, 2010.
Ya kamata a sani cewa kirkirar Ruwan Cube ya samo asali ne daga kokarin hadin gwiwa inda abokan hadin gwiwar Sinawa suka ce dandalin ya fi nuna alama ga al'adunsu na Sinawa, yayin da abokan aikin na Sydney suka kawo shawarar rufe 'guga' tare da kumfa, wanda yake alamar ruwa.
Gaskiyar ita ce kube yana wakiltar duniya, yayin da da'irar (wakiltar filin wasa) tana wakiltar sama. Saboda haka kwatancen kwatankwacin ruwa ne na gine-ginen kasar Sin. Cibiyar Bikin Ruwa ta dauki bakuncin ninkaya, ruwa da hada abubuwa masu ninkaya yayin wasannin Olympics.