Nice map Beavisssssssss. I like this one. It feels like a mix between many maps and you receive a great feeling. I like this theme.
The environment sky is really good and the use of textures works quite good together. The details are great at some areas, but left out at others. I really like the ruined area near the water, but my favorite place is the inside area (in the middle) and the huge arch entrances on the top level. Good job in there mate!
On to negative things. As I said above, there are some detailed areas and some not so detailed. You easily get spoiled and when you make the transition between the areas it is quite noticable. Also found some small visible flickering bugs. R_speeds values might be a bit high overall...like that matters.
Keep up the good work Beavisss and keep them coming.