Theme parks have absorbed some of this business around Halloweentime...but there are smaller haunts that go up in most major cities. Do a search on "haunted attractions" and you'll find webpages with listings of these. Maybe some in your area! There's a good chance there's one local to you.
If you like yard haunts, I recommend you check out this page. This yard haunt stopped operating last year but they have a wonderful website with history, pictures, audio and more!
www.hauntinggrounds.org