Fall-O-Ween at Heritage Hill

What It Is

Fall-O-Ween at Heritage Hill is OC Parks' twilight Halloween event at Heritage Hill Historical Park in Lake Forest. The 2026 edition runs over two weekends: Friday through Sunday, October 16 to 18, and Friday through Sunday, October 23 to 25. Nightly hours are 4:30 to 8:30 p.m.

Why Go

Heritage Hill is a historical park with 19th-century buildings on-site, and the Fall-O-Ween program uses the grounds for all-ages programming, trick-or-treat stations, performance, and themed activities. Admission and parking are free, which makes it one of the lowest-friction Halloween-season outings in South County. The twilight-to-evening window is the right scale for most attendees.

What To Know Before You Go

Location: Heritage Hill Historical Park, 25151 Serrano Rd, Lake Forest. Dates: October 16 to 18 and October 23 to 25, 2026. Hours: 4:30 to 8:30 p.m. nightly. Admission and parking: both free. On site: straw maze, scavenger hunt for ghoulish goodies, decorated grounds, Halloween and fall photo stops. Costumes: encouraged. Pets: leashed dogs (6 ft maximum) welcome. Pro tip: arriving right at 4:30 catches the quietest window and daylight for the park's older buildings.

The Honest Take

Capacity at Heritage Hill is finite; the parking lot and grounds fill on Friday and Saturday nights, especially closer to Halloween. The programming is scaled for younger attendees, so set expectations accordingly. OC Parks has run this as a free event; if a small admission fee is added for 2026, it will appear on the ocparks.com event page before the first night.