Save 49% 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, including first day of use. Cost: $59 for adults (value $115); $49 for children. Purchase Houston CityPASS at citypass.com or at any CityPASS attraction.