Save 48% or more and skip 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 Children’s Museum of Houston OR Kemah Boardwalk All-Day Ride Pass. Valid 9 days. Cost: Adult $56 (value $107); Child (3-11) $46. Purchase booklets or printable vouchers at citypass.com or at any CityPASS attraction.