Union Park has amazing Sunday Specials! They have an incredible buffet with high quality food for $15 and unlimited mimosas for $7. Literally, before you finish your mimosa, they will bring you another. They have a great rooftop which is perfect on nice days here in Austin. The downstairs atmosphere most resembles a nightclub, except its sunny outside. I had the best Sunday Funday I have ever had in Austin there. I will definitely go again and cant wait to bring more of my friends next time.