Hhn Hollywood 2024 Dates. This year, hhn at universal studios hollywood will run on select nights from september 5 to november 3. Visit halloween horror nights, the premier halloween event, at universal studios in los angeles, orlando and singapore.


Hhn Hollywood 2024 Dates

Welcome back to halloween horror. Learn more about our incredible theme park attractions in california such as the wizarding world of harry potterโ„ข and much more!

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