From the creepy crawly to historical hauntings these places will scare you on all hallows eve.
http://www.salemwitchmuseum.com/
http://www.hrp.org.uk/TowerOfLondon/stories/buildinghistory/prison#sthash.KFzsfzUO.dpuf
http://www.reptilegardens.com/
http://www.smosh.com/smoshgames/scared-poopless-universals-halloween-horror-nights-field-trip
http://universal.wdwinfo.com/universal-events/halloween-horror-nights/
http://www.arkansas.com/things-to-do/uniquely-arkansas/haunted-arkansas/legends/