Houston CityPASS — Discover the best attractions in Houston /at one great price and skip most ticket lines. Spend less, experience more.Includes prepaid admission to five must-see attractions: " Space Center Houston " Downtown Aquarium " Houston Museum of Natural Science " Option Ticket 1: Houston Zoo OR Museum of Fine Arts, Houston " Option Ticket 2: Kemah Boardwalk All-Day Ride Pass OR Children’s Museum of Houston?