After four years at Islands of Adventure, the event returned to Universal Studios Florida for "Sweet 16". The 2005 Horror Nights website was removed and updated with a teaser page on July 1, 2006. On July 10, the official 2006 Horror Nights site went live. The official press release of the event was made on September 1, 2006. The site was fully updated the same day, revealing the complete roster of houses, scarezones, and shows.