Mayagüez is the largest city on the Western side of the island of Puerto Rico. It has roughly 90,000 inhabitants, plus a floating population of ~15,000, on weekdays, particularly when the University of Puerto Rico at Mayagüez (UPR-M) is not in recess. In its heyday, Mayagüez was a major manufacturing center, particularly famous for food processing (tuna canning and beer). Currently, besides being a college town, it has an industry mostly based on trade of goods and services. Tourists may use it as a base for exploring the Western coast of Puerto Rico.