Arenal Volcano, located near La Fortuna in Costa Rica's Alajuela Province, is a must-visit for nature and adventure enthusiasts. The volcano and its surrounding national park are accessible via a scenic drive from San José, taking approximately 3-4 hours by car. While guided tours offer insightful experiences, visiting solo with a rented vehicle is feasible, allowing for flexibility in exploring the area's hot springs, hiking trails, and picturesque views. Entry to the national park costs around $15, and setting aside a full day will let you thoroughly enjoy the volcano's offerings. The best time to visit is during the dry season from December to April, when clear skies provide the best views of the volcano and surrounding landscapes. However, even during the rainy season, the lush greenery and reduced crowds can be appealing. Packing rain gear and sturdy walking shoes is recommended for those visiting in wetter months.