Ka kammala wannan magana: A shekara ta 1964, Soviet mace cosmonaut Valentina Tereshkova, mace ta farko a sararin samaniya, ya ba da wani taron manema labarai a hotel din. Daga Janairu 3 zuwa 12, 1966, Habana Libre ta karbi bakuncin taron Tricontinental na farko na mutanen Asiya, Afirka da Latin Amurka. Fidel Castro ya zauna a cikin otal din Castellana Suite, daki 2224, a lokacin taron, kuma ya sanya ɗakin ya zama gidansa daga baya don duk manyan al'amuran diflomasiyya. Yanzu an adana ɗakin a matsayin gidan kayan gargajiya, tare da duk kayan ɗakuna na asali da zane-zane daga 1958. Daga 23 ga Oktoba zuwa 20 ga Nuwamba, 1966, Habana Libre ta karbi bakuncin
17th Chess Olympiad, tare da baƙi ciki har da Bobby Fischer da Boris Spassky. A cikin 1967, otal ɗin ya karbi bakuncin ɗan siyasar Marxist na Chile Salvador Allende.