Save 48% or more and skip most lines at Houston’s top 5 attractions. Houston CityPASS includes admission to: Space Center Houston, Downtown Aquarium, Houston Museum of Natural Science, Houston Zoo OR Museum of Fine Arts, Houston, and Kemah Boardwalk All-Day Ride Pass OR Children’s Museum of Houston. Valid 9 days. Cost: $59 for adults (value $112); $49 for children. Purchase booklets or printable vouchers at citypass.com or at any CityPASS attraction.