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(WUSA9) -- In honor of Halloween, TripAdvisor has highlighted filming locations of some of Hollywood's scariest movies.

Two of these frightening locationsare local!

TheM Street Stairs in Georgetown were the scene ofFather Karras' climatic on-screen death in The Exorcist.

Independent film makers shot several scenes of The Blair Witch Project at Seneca Creek Park in Montgomery County.

Click through the photos, courtesy of TripAdvisor, to see the other locations.

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