Witches, trolls and giant spiders creep out of the shadows on tours every 30 minutes from 6:30 to 9 p.m., Wednesday, Oct. 28, through Friday, Oct. 30. $7 adults; $5 for ages 7 to 13; and free for kids younger than 6. Admission on Wednesdays with a donation of two cans of food for the Tucson Community Food Bank is $3 for adults and $2 for ages 7 to 13. Call or visit www.tucsonvalleyofthemoon.org for more information.