Has anyone else had experiences at the old Briarwood Sanatorium in western Pennsylvania?

Never been to Briarwood specifically but I've done a fair bit of research into abandoned sanatoriums as a type of haunted location and they follow some really consistent patterns in terms of reported phenomena - infrasound from decaying HVAC systems, electromagnetic spikes from old wiring, that kind of thing. Both of which can produce exactly the kind of "presence" feeling people report.

That said I'm not just writing it all off either. Some of the accounts from Briarwood that have circulated online are genuinely hard to explain away with the usual toolkit. The corridor sounds in particular. Anyone who's actually been inside - what floor were you on when things got weird? That detail keeps getting glossed over in every writeup I've found and it matters quite a lot if you're trying to map where the activity clusters.

Also curious whether anyone has done proper baseline EMF readings before doing a night investigation there, because most of the video evidence I've seen looks like it was done with zero methodological rigour whatsoever.

Bit outside my usual wheelhouse (I'm more of a MiB person than a ghost person) but the pattern thing is genuinely interesting from a research methodology standpoint. The question I'd always ask is whether the consistency in reports is because something real is happening, or because people arrive at these locations already primed with expectations from similar accounts they've read online. Confirmation bias is brutal in this field and sanatoriums especially carry so much cultural baggage that separating genuine anomalous experience from pre-loaded narrative is really difficult. @fergus_thompson what methodology are you using to filter out that kind of contamination in your research?

Never been to Pennsylvania but these patterns you're both on about, I've seen the same thing closer to home. Old institutions seem to hold onto something. Whether thats residual energy or something more active I couldn't tell you, but the activity I've documented in similar buildings here in England follows the same sort of blueprint every time - knocking, things moving, cold patches in rooms that had no windows.

What sort of patterns are you specifically referring to @fergus_thompson? Because if its what I think it is, there might be something worth comparing notes on. My experiences have mostly been in older psychiatric buildings and the poltergeist activity in particular seems almost... scripted isn't the right word but its repeatable in a way that proper haunts usually aren't.