Busch Gardens Williamsburg 2019 Howl-O-Scream | What To Expect! As the temperatures cool down the fun heats up as Busch Gardens® Williamsburg’s Howl-O-Scream returns as one of the best Halloween-themed events on the east coast. A heightened scare factor will creep into Busch Gardens’ six ghastly haunted houses, six nightmarish Terror-tories™, hair-raising escape rooms, and frightening shows. Deemed one of the best Halloween events to attend on the east coast, Busch Gardens ...