Guanacaste is primarily a beach destination, so the water tours are highly recommended! Sunset catamaran cruises, snorkeling, SCUBA, surfing, mangrove kayaking, and fishing are some of the most popular choices.
Inland tours are also available, though they often require a drive of 1 hour or more. Still, the options are worth exploring! Rincon de la Vieja National Park, Palo Verde National Park, and Santa Rosa National Park will give you a dose of nature in this dry forest region.
For some adventure, try zip-lining, canyoning, or whitewater rafting!