Entrance to the park is free. Guided tour fees range from $7-$55; $5-$20 (ages 6-12); $3.50-$27.50 (senior citizens with Golden Age Passport); free (ages 0-5). Ages 0-5 are not permitted on some tours. Reservations are recommended.
Guided tours are conducted daily year-round; phone ahead to verify schedule. Closed Christmas.