An important shrimp-fishing port on the main Hwy-15 corridor, GUAYMAS, around 180km north of Navojoa, claims some proud history but has little to offer visitors. Unless you’re looking for somewhere to crash for one night, it’s advisable to head for nearby beaches; the resort town of San Carlos is just a short bus ride away. One reason to linger in Guaymas is the annual carnival, held here in February since 1888 and one of Mexico’s best (it begins on the Thurs before Ash Wednesday and ends at the beginning of Lent). Concerts and parades are held all over town (the main location is the Plaza de los Tres Presidentes), beginning with the traditional burning an effigy of something or someone who has upset the public that year (Vicente Fox and George Bush have both featured in the past). Note that accommodation in town is booked months in advance for carnival.