Guanacaste Day is celebrated annually on July 25 in Costa Rica, commemorating the historic annexation of the Guanacaste province to the nation. This significant event transformed Costa Rica by integrating a region known for its rich culture, agriculture, and natural beauty. The holiday features various festivities, including local parades, folk dance performances, and traditional cuisine such as gallo pinto and casados. Cultural institutions often offer special programs, with many restaurants highlighting Guanacastecan dishes. Additionally, museums may provide free entry or special exhibits to honor the region's heritage. Local businesses and tourism operators also promote Guanacaste-specific experiences, enhancing the celebration's cultural significance.