Thu, Oct 31: The grounds will close at 2:00PM to get our ghouls in place for Wave Hill-O-Ween! Gate reopens for trick-or-treaters at 3:00PM. The Cafe, Shop and grounds remain open until 8:30PM. | Shorter days are almost here! Starting Nov 1, last admission to the grounds is 4PM. Gates close at 4:30PM. | Wave Hill-O-Ween Details