This movie came out within the last decade and was some very strange, trippy and kind of artsy film I was convinced was a Kubrick film but it’s not.  There is a hotel which is serving as some sort of portal to another (alien?) Dimension.  I remember a scene with three massive pillars of water in a large room, and the main character must choose one?  And this hotel is secretly protecting this pool/portal with this long line of people going to it.  Any guesses?