The Cha-Cha Palace, also known as the Grouch Cha-Cha Palace, is a dance establishment for Grouches, first mentioned in Episode 1443 as Oscar, Grundgetta, and Osvaldo attend.
In Episode 1553, the Cha-Cha Palace holds "Bring Your Own Can Night." Bruno takes Oscar to the event. However, since Oscar is letting the adults and Barkley spend the night in his can, he has to take them with them. Oscar tries to hide the fact that he has more people in his can, but they object, and Oscar ends up missing the dance when he can't afford to pay admission for everyone.