October is the spookiest month of the year — and you don't have to be a ghost-hunter to find places in the US that will make you raise an eyebrow or two.

To kick off the month, Matador Network rounded up the most unexplained places you can visit in every US state. Sure, a few are your classic haunted houses, but you'll also find plenty of geological mysteries, historical sites with questions even archaeologists can't answer, and more than a few destinations known for well-documented natural phenomena without any clear cause.

Whether you want to check out an Oregon state park rumored to be the site of a lost treasure, a North Carolina mountain studied by US government researchers, or even a supposedly cursed abandoned amusement park, these are the most mysterious places in every state perfect for a spooky-season, supernatural road trip.

See you out there,

Suzie Dundas, commissioning editor

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