Los Chiles in Alajuela will welcome you with a beautiful scenery of wild life and wilderness, it's not a very populated town, however it's habitants live from agriculture such as cacao, corn and beans.
From Los Chiles you can explore the solentiname islands in Nicaragua as it's just one boat ride away. You can also take the Río Frío tour, that will take you through the River where you will be able to see howler monkeys, birds, and many reptiles.