I thought that my first experience with the supernatural was everything that started happening after I began wearing my grandma's earrings (documented in my other two stories), but I've recently realized that isn't true. My first experience occurred on a trip I took a few years ago but was eclipsed by all the good memories of the trip.
My family and I took a trip to Greece with a few of our friends a couple of years ago. I was sharing a room with two of my friends and our two other friends were in a different room. I remember as soon as we walked into the hotel in Athens, my first thought was that this was a place that would be seen in a fantasy movie or depicted in a book about the supernatural.
We all went up to our rooms to get settled and came back down for dinner a little while later. Friends A,B and I briefly touched base with our parents before getting dinner. Friends C and D came down from their room a few minutes later. As they joined us at the table, they looked confused and vaguely concerned. Friend A (who seems to have uncanny intuition) asked them if something was wrong. Friend C immediately told us that she thought their room was haunted and Friend D agreed. Being a non-believer at the time, I was just kind of like "...what?" As Friends C and D continued to tell us about their experience, I still wasn't believing it, so after dinner they invited us to go see for ourselves.
I was the first to enter the room with Friend B behind me. I remember being doubtful until I stepped into the room, and it was freezing cold. Like unnaturally cold and a vastly different temperature from the hallway, just as Friends C and D had described to us. As soon as the door opened, the cold hit along with this feeling that this room was different from the rest of the place. I can't find a proper way to describe the vibes I got from it. It had an odd moist musty smell to it that Friends C and D said they couldn't find the source of despite searching thoroughly. As I walked farther into the room, I began to get a very strange feeling like I was being watched, even like I was really being studied. Friend B didn't say anything, just followed quietly behind me but looked as concerned as I was. Friend A refused to walk into the room at all.
Two nights later, in the room I was sharing with Friends A and B, I woke up to shuffling at around 2:00am (which seems to be common time for me to wake up in the middle of the night for some reason, and I now find it interesting that Friend A woke up to do the following at this time too) to find Friend A inspecting different corners of the room. She kept returning to one window in particular and making sure it was locked over and over again. I asked her what she was doing, and she said she was just paranoid someone was in the room with us. I ignored that and told her to go back to bed. She did, but a few minutes later I noticed the distinct outline of a human (I can't recall exactly if it was male or female but I'm like 95% sure it was female) hiding behind the curtain. I couldn't feel any energy from it either positive or negative which makes me question if it was actually there, however.
It wasn't just the rooms either. Every time we walked up the stairs in the lobby, I felt we were being followed. I looked over my shoulder several times, but there was never anyone there.