When Mariano's Mexican restaurant lost its lease in the Old Town shopping center, it was a sad day. The birthplace of the frozen margarita would be no more, replaced instead with a Petsmart. They should make historical markers for occasions such as this, but history, alas, is lost on some. Mariano's, however, would not be beaten. It has found new digs on Skillman Street across from Super Target and dubbed itself Mariano's Hacienda. Thankfully, the restaurant continues to serve its famous margarita and its warm salsa and its gooey Tex-Mex. Just when we thought Mariano's was down for the count, it came back to fight another round, and the new place is a knockout.