Blue Hole Regional Park is a natural, spring-fed swimming hole lined with the towering iconic Cypress Trees located deep in the heart of the Texas Hill Country. The whole family will enjoy swimming in crystal clear water, sunbathing on the grassy swim lawn, and of course, swinging on our famous rope swings. Blue Hole has many outdoor events throughout the year such as Concerts in the Park, Star Parties, and Nature Camps! Reservations are required for swimming only. All other recreational amenities are free and open to the public.