Duca Costa Rica is a coffee plantation built on the volcanic slopes with origins dating back several decades, and many foreign tourists are keen to visit it when they come to beautiful Alajuela, wishing to learn about the history of cultivation, production, preparation and roasting of high-quality local coffee without the use of electricity ( It is stirred only by the power of water), which is considered one of the best coffees in the world, and this process is carried out by a local family with more than 50 years of practical experience. It should be noted that you can taste the coffee and walk around the farm.