The Senior Center was a place built by Robin to home the Seniors. It appears in the episode "Hey Pizza!."
Here are known residents of the Senior Center.
Robin about to vomit of Silkie's bikini suit.
Come on Star, we wanted to see YOU wearing the suit.
Robin, you wouldn't believe what you're about to see.
Cyborg and Beast Boy going berserk.
You're late! My pizza is free now.
Next time let's order some chinesse food.