We're not recommending a specific trail or route through this historic agricultural district, but we do recommend you explore it on foot sooner than later. The building boom exploding throughout the southern part of the county means it's only a matter of time before the quiet back roads and fragrant groves and colorful nurseries and lushly landscaped ranch homes are but a memory. A good place from which to set out is the county's 32-acre Fruit and Spice Park (24801 SW 187th Ave., 305-247-5727), a unique collection of some 500 types of fruits, nuts, spices, and herbs. Prepare for sun, heat, bugs, and road-hogging farm equipment.