With a population of slightly more than 100,000, this is the largest city on Puerto Rico's west coast. Although bypassed by the mania for restoration that has spruced up Ponce and Old San Juan, Mayagüez is graced by some lovely turn-of-the-20th-century architecture, such as the landmark art deco Teatro Yagüez and the Plaza de Colón.
Puerto Rico's only zoo, the 35-acre Zoológico de Puerto Rico, is just north of downtown. After $13 million in renovations, it's looking pretty spiffy. New on the scene is a 45-foot-tall aviary, which allows you to walk through a rain forest environment as tropical birds fly freely above your head. There's also a new butterfly park where you can let brilliant blue morphos land on your hand, and an arthropodarium where you can get up close and personal with spiders and their kin. There is a $2 charge for parking. Rte. 108, north of Rte. 65, 00680. 787/622-6330. www.parquesnacionalespr.com. $6. Wed.-Sun. 8:30-4.
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