Best geocache ever

I had a dream I went to some asylum/castle that was made into a museum. After about 5 minutes I pulled out my phone to see if there was any geocaches around. There were and then they weren't caches to find, but like secret rooms. All the rooms were known to the people that were running the museum because there was signed and stuff in the room, but the entrance of the rooms were all hidden. There was even this once door that lead to nothing. You would open the door, but then there's another door behind it, but it didn't ever go further in. You just kept on opening a door to find the same door behind it. After about opening this door like 7 times by pulling it open (It was opened either by pulling or pushing) I decided to push open the door and follow through it to see where I end up. I went through the door and back where I came from instantaneously. There were hidden doors all over the place. Some that just looked like the wall and was really a door, some were even holograms where you can just walk through the wall. It got me super excited about going to more museums because I thought they all had these like hidden exhibits. I had this awesome updated version of the geocache app too where it had augmented reality. So I would just use the camera to look around and the place where the cache was hidden would have a virtual flag post there to tell you where it's hidden. It was like geocache easy mode.