The City of Ontario's Museum of History & Art, in Ontario's former City Hall on South Euclid Avenue, shows regional history and art. Admission to the museum, its programs and events is free. Open Thursday and Friday noon to 4pm, Saturday and Sunday 11am to 5pm.
Ontario's library celebrates bilingualism with stories, songs and activities in English and Spanish for ages 0 to 5. Tuesday, November 3, 2026, 10:30 to 11:15am at Ovitt Family Community Library. Space is limited: free tickets are handed out first come, first served starting 30 minutes before. Cuentos, canciones y actividades bilingües para niños de 0 a 5 años; los boletos se entregan 30 minutos antes.
Verified Oct 27 · ontarioca.gov
Catch: Ages 0–5 · Free ticket at the library, handed out from 30 minutes before; limited space
Ontario kicks off the season at Town Square with cookie decorating, letters to Santa, community performances, photos with Santa and the tree lighting. Thursday, December 3, 2026, 5 to 8pm. Free for all ages.
Ontario's annual Holiday Light Parade runs along Euclid Avenue from Fourth Street to B Street, followed by carolers, crafts and a photo with Santa at Ontario Town Square. Saturday, December 5, 2026, 6:30 to 8pm.
Verified Oct 27 · ontarioca.gov
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