A few years ago, I think it was in around 7th or 8th grade, we went on a school trip to Bad Tölz, Germany.
From the beginning on my best friend and I -who both tend to pick up on energies at lot more than most people- already felt something was just off about the place. But it really kind of escalated after we had a little "séance" in the forest, that belongs to the place we stayed at. We asked the basic questions like if there was any spirits near us, and at some point all of us started feeling like we were being touched, for example on my neck and ankle or my friend's arm. A few minutes later, we noticed that these exact spots had turned bright red. We actually had photos of that, but since it's been so long, we all have new phones by now. We did end the séance properly by the way, by all of us saying goodbye and thanked the spirit for talking to us.
We had already kind of started to get a little scared at that point, but it just got worse.
After it got dark my roommate and one of the people who had also taken part, were brushing their teeth when they suddenly saw glowing red eyes in the mirror. So obviously we were even more terrified after that, but it still didn't stop there.
We decided to sleep in the same bed because of that.
It was in the middle of summer so we opened the window a little.
At around 23:30-00:00 o'clock, the window suddenly slammed all the way open. There was no wind. The window was so heavy and difficult to move that we had to open it together.
After that, we noticed a shadow in a corner, where no shadow should have even been cast because it was on the opposite side to the window.
We even tried to debunk this afterwards, but the only things tall enough in the room were the bunk beds and a closet, none of which could have thrown a shadow like that.
Needless to say we were kind of traumatized after that night lol.
I really don't know what happened that day and why that happened.