Parque Nacional Santa Rosa, a significant dry tropical forest and historical site in Costa Rica, is largely accessible via the Pan-American Highway, though some internal roads to remote sections like Playa Naranjo may require a 4x4. Visitors can enjoy independent exploration of the Casona museum and marked trails, but a local guide is highly recommended for enhanced wildlife viewing. The park is open year-round, with the dry season (December-April) being most popular for hiking due to drier trails, while the wet season offers vibrant greenery. Expect an approximate entrance cost of $15 USD for foreigners, with guided tours being an additional expense. A typical visit duration ranges from 2-3 hours for the main historical attractions to a full day or multi-day trip for extensive hiking, camping, or reaching surfing spots like Witch's Rock; always carry ample water, sunscreen, and insect repellent.