León is good for strolling around -- it's perhaps easiest to discover its many historic buildings on foot. To get to outlying areas, you can take local buses or ruleteros (pickup trucks with canvas covers), which leave from Mercado Central and the bus terminal. Fares cost C6. Note that the roads around the city are in terrible condition, and it is not uncommon to see children filling potholes with dirt in exchange for coins from passing motorists. Taxis are easy to catch on any corner, and fares start at C10.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.