The Best of Costa Rica Personalized For You! Whether you’re looking for the excitement of an Adventure Tour, the beauty and serenity of a Nature & Culture Tour, or the pleasure and fun of a Water Adventure Tour, Sibu Tours in Guanacaste, Costa Rica has something for everyone. We’re family friendly, equally adept at creating romantic getaways, and anything in between. Let us create the perfect Costa Rican vacation experience just for you.