The Curse of Pandora's Box

Universal's Halloween Horror Nights is an annual Halloween-themed event at Universal Studios theme parks in Orlando, Hollywood, Japan and Singapore. The longest-running & most successful iteration of the event, in Orlando, Florida, began as Universal Studios Fright Nights in 1991 as a 3-night event at Universal Studios Florida. The following year, it was re-branded as Halloween Horror Nights, advertised as the "second annual event". Since then, it has evolved into a scare-a-thon event filled with themed haunted houses, scare zones & shows that runs over the course of select nights from early September until late October/early November, inspiring offshoots at other Universal Studios locations across the globe. The Orlando event was held at Universal Studios Florida from 1991 until 2001, after which Halloween Horror Nights moved to neighboring Islands of Adventure for 2002 & 2003. In 2004, a dual-park format was tested, which opened parts of both parks, before returning exclusively to Islands of Adventure in 2005. Making its return to Universal Studios Florida in 2006, the event has been held yearly with the exception of 2020, when it was canceled due to the COVID-19 pandemic, making it the first year that Orlando's Halloween Horror Nights was not held since its inception. The event later resumed with its 30th year in 2021.