The Building Complex

I barely remember part of my last dream from last night, which I think started at an interesting building complex that seemed familiar like it has been in one of my past dreams before, and I think that two opposing groups of humans and non-humans were having a conflict / competition over the building complex.

I think that the building complex was a combination of ancient and modern styles, with an above ground ancient castle-like structure on the top of a hill-like bridge area, and with the under structure and underground parts being more modern probably; and I think that the two opposing groups probably reminded me a bit of something from The Chronicles Of Narnia maybe, with a human prince leading one group and a White Witch / Queen Jadis-like female being (entity) leading the other group, but I am not sure.