I attended summer daycare the year I was going into fifth grade, we went to many places for field trips and on this day we were going to a local museum. It was an older looking white beautiful colonial house with big white columns that was converted into a museum to preserve that screen shot in time. They had us shifting dirt to find rocks and doing small crafts, we took a quick tour of the first and second floor, and then we painted. My hands got dirty so being being the curious kid I was i decided to sneak off and find a restroom and explore on my own. I took a smaller staircase up to the second floor I found a sink right off the stairs and rinsed my hands off. I decided to take a look around and went down the hall, right in front of me the hall it took a left turn and a small child shadow was cast on the wall as I went around the corner fully. I thought maybe one of my friends was standing further down that hall in a room casting that shadow from the sun in the window. I walked and saw there was no rooms or anything at all on that side just another bare wall, the shadow figure was dark, not faint, and it waved at me I knew at that point it was something i couldnt understand and I was one hundred percent alone up there. I turned and ran, took the stair pretty much leaping down them. I found a friend and had her come back up with me so they could see it themselves. The shadow figure was gone, but that cold sick feeling remained and she could feel it to and immediately ran back down to the group. We got back in the van, I was scared that I was going to see the child shadow again on a wall and stayed anxious when looking at blank walls for weeks. I'm in my thirties now, I still remember it vividly to this day and have only stepped back into that place once for a Christmas event with my own child. It felt just as it did that day, creepy and the air electrified.