Viva Casa Bonita! Friday. Colorado’s weirdest, and arguably best-known, restaurant is a theme unto itself. But Casa Bonita is more than just a “South Park” episode and local family tradition. The Tex-Mex “eater-tainment” concept, the last of a regional chain, counts Next Gallery’s “Viva Casa Bonita” exhibition among its many, wildly random impacts (see also Meow Wolf).