Former neon sign for Crystal Restaurant at 87 Public Square in Watertown, New York. Opened in 1925, it’s the oldest restaurant in Watertown. Dennis and Jerry Valanos owned the restaurant until 1943, when it was purchased by their head chef, Otto Dephtereos. Today, Peter (Otto’s grandson) and Libby Dephtereos manage the restaurant. A Prohibition-era advertisement for “All Legal Beverages” still appears in the window.