I have had a few strange experiences in the past, rather than writing them all here I will go with the two that are the most creepy/strange.
First one was I worked at a summer camp in America between my 2nd and 3rd year at Uni in England. This was a camp for people with disabilities in the middle of the woods in rural mid west.
Anyway at about 2am I was sneaking back from my now wife's cabin and heading back to mine. On route I passed by what was the main lodge that had a large glassed fronted main room with sofa's etc in for people to just hang about in. It also had a large fish tank in the bottom corner which cast a blueish tinge across alot of the room.
As I walk by the lodge I see the outline of a person sat in a wheelchair looking at the fish tank, I can't make out any details of the person just a black outline. At first I thought nothing of this as often campers there can not sleep throughout the night so staff will take them on walks etc. However I could see no one else in the lodge so I thought I better go and check everything is ok.
Now it took me 10-15 seconds to turn around and walk through the main door to the lodge, however when I went into the room there was no one in there and I got a very strange feeling. I found out later that the camp had been around for about 60 years and a couple of campers had died there in the past so that could be a possible explanation.
My second one was I was in New Orleans for Mardi Gras coaching a group of 16-18 year old rugby players from Texas who were there for a tournament. The main group of lads left on the friday morning, however due to other commitments I followed in a car in the afternoon. Due to traffic etc I could not meet up with the lads that night and had to stay in a hotel on the outskirts of New Orleans. The next day I met up with the lads and they (and parents) told me about the strange experiences they had had the night before. It turned out to save some money the President of the rugby club had got us into an old Orphanage which was being renovated by a charity as it was the US equivalent of a listed building.
I laughed at the lads and called them fannies etc and told them I was looking forward to seeing this place that night as they were clearly imagining things. Anyway that night I get to the building and it is very creepy looking. The parents are on the first floor, myself/coaches and the lads are on the second floor and the third floor is closed. One of the lads in the team was a bit of a wrongun (a month after this he was arrested and put on an electronic tag) and he came to me and asked if I wanted to see the third floor.
I told him that I thought it had been locked up but he assured me that he had found an open door.
So up we head with three or four others to the third floor and it turned out the open door was a lock he had smashed, anyway in we head and whilst I am giving him a bollocking for his behaviour I am taking in what is around me. There was a massive stained glass window and various doors leading off the main hallway. As we get down to the bottom of the hallway I see a door marked 'Experimental Therapy' which had been nailed shut and the handle knocked off. Stranger still the door appears buckled outwards as if someone on the inside had tried to get out. I hear a bang nearby us and basically shite myself and start to run.
As I get back to the third floor stairwell I practically vault the stairs back down to the second floor, now here was where I made my mistake, rather than turning right where the lights were on and going 200 yards to where we were sleeping....I instead turned left down a dark corridor. Now I only walked about 20 yards down this corridor before approximately 15-20 yards I saw two hooded figures holding candles walk along the horizontal connecting corridor in front of me, they both stopped, looked up and then kept on walking. I then proceeded to run back the way I had come, grab my bag and get out of there. I ended up sleeping in the car.
Apologies for the walls of text, both interesting experiences, to this day I am still not sure what to make of them.