Yeah Ive seen and experienced many, many things like that. Supernatural, metaphysical, paranormal, etc.
Ghosts, UFOs, orbs, auras, poltergeist-like incidents, energy, etc.
Many of these experiences happened while I was with other people and they experienced the same thing. Sometimes I knew these people and sometimes I didnt. Sometimes they already knew about these things, other times they had no knowledge what-so-ever. Its definitely true that there are certain places where they happen more often, but really if you look around and really pay attention these things are happening everywhere. People I know have noticed that these events happen much more frequently when Im around them, Im not sure why that is? My guess would be that Im more "in tune" and connected with the other side than the average person. This has been true most of my life but definitely more in the past 4 years or so, they started happening more randomly, then I finally did research on them and learned a very large amount of knowledge and they happened more frequently and I noticed them more.
But yeah from my experience and those around me there is definitely an "invisible world". The far majority of humans are at the narrow level of consciousness that they dont notice or experience these things, even the true psychics and people more connected to the other side can only get a glimpse at a very very small amount of this invisible world. Theres some people naturally prone to it but I believe that if you put effort and train, most people will be able to sense those things.
Theres other easier ways to get a better glimpse into this other realm, deep meditation, psychedelics (heroic doses especially, DMT), when you sleep (most of the time you wont remember these things though), lucid dreaming, astral projection. Basically any way that you "turn off" in the physical realm you can "turn on" either in this other realm or get a glimpse of it. The deepest and raw version of this place would be the "true" version, AKA the spiritual realm/soul realm/metaphysical ether whatever you want to call it. You will only be able to experience that realm completely when you die in the physical world, and dont worry that wont be long whether its in 1 year or 100 years its really just the blink of an eye in that realm where time doesnt really exist. I believe the closest you can get to that realm while still being physically alive (and coming back fine of course) is when you breakthrough in DMT (this way youll be able to remember some and bring back some with you), things like salvia...ehh somewhat, and also when your deep in sleep (the stuff you dont remember when you wake up, not the main dreams), astral projection if you can breakthrough (the 2nd definition of astral projection, Ive only slightly broke through briefly), which is less intense than a large dose of DMT though. If you look at the 11 dimension string theory, infinite universe, etc its somewhat if not directly related to these realms and where the incidents originate at.