Magic Forums

So I wanted to ask if it is in any way possible to open a portal. I mean for going into a parallel dimension. I've read into things such as subjective reality where basically people are able to bend the boundary between fantasy and reality, therefore being able to open a dimensional portal. But is there any type of magick that can manifest a physical portal? Before anyone says this is a silly question, just think for a moment, if people are able to do spells and basically create their desires, why can't magick bend reality to manifest a physical portal? I've also read that sometimes mirrors could be used as portals as well if opened properly. So does anyone have any ideas or suggestions? Thanks.