Carousel Village UnBOOlievable Festival. Calling monsters of all ages! The whimsical Carousel Village is celebrating its spooky side with the return of the UnBOOlievable Festival. Visit the frightfully fun celebration in costume to enjoy the carousel. Kids ages 12 and under can trick or treat at the food trucks from 1–2 pm, while supplies last. 11 am–2 pm. Roger Williams Park Carousel Village, 1000 Elmwood Avenue, Providence. Free.