Guanacaste is known for its beautiful beaches, so it's definitely worth a visit to check out some of the best ones. Some great Guanacaste attractions to see include Playa Hermosa, Playa Avellanas, and Playa Negra. If you're looking for something a little more adventurous, go zip lining or surfing at one of the world-class beaches in Guanacaste. No matter what you choose to do, you're sure to have an amazing time in this stunning corner of Costa Rica.