Largest waterpark in Utah with waterslides, a wave pool, and other water attractions.
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Small museum that chronicles the history and methods of the Utah State Hospital (a mental health hospital operating since 1885). The buildings elsewhere on the hospital campus are notable for their architecture, including a "castle" built in the 1930s by the Works Progress Administration (you must receive permission to visit the castle; ask at the museum for information about how to do that).
A giant concrete Y towers over Provo from "Y Mountain." The zigzagging hike to the Y is relatively easy and takes most people about 45 minutes each way (although if those recently at lower elevations may wish to plan on more time). Once at the Y, you have a lovely view over Utah Valley and Utah Lake. (Another trail leads south from the Y to the peak of Y Mountain.) The hike itself is exposed with little shade, so plan accordingly when hot. The trail is particularly popular with BYU students. Facilities available at trailhead.
Planetarium offering shows for the public. Reservations may be made online. (Campus map).
Shows foreign and classic films four days per week in a large auditorium. Tickets not required. See website for weekly schedule (showing times usually provided two weeks in advance). (Campus map).
Museum of art featuring rotating, world-class exhibits, in addition to a permanent collection. Audioguides and docent-led tours available. The Museum Cafe offers lunch onsite (11:30AM-2PM). Next door is the Harris Fine Arts Center, which features galleries of student art. Close by is also the Harold B. Lee Library, which features art and historical exhibits on the 1st and 3rd floors.