Multicultural Arts Festival

This second annual event features music, food and performances, including a presentation of "Peter and the Wolf," with music by the Old Bridge Chamber Orchestra. The event is sponsored by the Prince William County Human Rights Commission, the Prince William County Office on Youth and the Creative and Performing Arts Center. Noon-6 p.m. Saturday. Ferlazzo Building, 15941 Donald Curtis Dr., Woodbridge. Festival activities, free. Play, $10; $5, children and senior citizens. 703-792-4680.

Ghostly Lock-In

Spend the night in one of the most haunted houses in Dumfries, sponsored by Historic Dumfries Virginia to benefit the Weems-Botts Museum. 8:30 p.m.-6 a.m. Fridays and Saturdays, through Oct. 29. At the museum, 3944 Cameron St., Dumfries. $75; registration required. 703-221-2218.

'Moon Over Buffalo'

Two aging actors on tour in Buffalo in 1953 have one last shot in securing a starring role in a film when director Frank Capra reviews their performance. This farce, performed by the Prince William Little Theatre, is a combination of three plays, with zany characters and chaos. 8 p.m. Fridays and Saturdays, through Oct. 29; 3 p.m. Oct. 23. George Round Elementary School, 10100 Hastings Dr., Manassas. $12; $10, students; $6, children 12 and younger. 703-330-7796.

Fall Wildlife Festival

Demonstrations, nature hikes, live hawks and owls, a wildlife photography seminar and other activities, sponsored by Friends of the Potomac River Refuges. 9 am.-3 p.m. Saturday. Occoquan Bay National Wildlife Refuge, end of Dawson Beach Road, Woodbridge. Free. 703-636-4115 or www.foprr.org.