Very nice map, your texturing is pretty good in this map (But i dont like too much the glowing ones) And your details are always creatives, the only thing i can point out in this map, and in a lot of your maps is that Sauerbraten is a very fast game, and because of that it's not recommendable to make narrow corridors. This map feels very cramped in a lot of places.
If you fix that in every map you make, they will be way better.

Try to eliminate long corridors, narrow places, and run around your map to test, if you feel its easy to move around, to take different ways, options, to use a grenade, maybe to reach higher level instead of turning around at other corners, and all those things (Good examples: Reissen-Haste-Forge) Your maps will be also fun maps to play.

Aesthetically this is one of, if not the best map I've seen so far. However as Doko pointed out the flow isn't very good. The time it takes you to run to enemy flag and back on the shortest route is 15 second, which is very little (most maps go for 20-30 seconds). Also it is generally a good idea to avoid sharp turns and keep things a bit wider, because it makes it easier to run and navigate. It also helps when the player can guess where a certain route will take them. For example the entrance from the battlements into the towers at the edge of the map actually looks like it will take you inside the main building, which it does not.

Thanks for the quick responses. I've done several changes to the map's layout, but can't get away with too much without completely altering the map & making certain objects (such as spiral towers & battlement walls) seem too big compared to other sections of the map. So I've decided that all the walkways that I figure won't be used as much, are pathways to vantage points, or have no room to be expanded (such as the Bartizans inside the main halls) will be kept at their current sizes. I'm also quite limited as to space as I'm playing chicken with a 192k WTR. All edits have been noted in the changelog under the description.
The screenshots will be updated at a later time when this map is considered "done" as the map still looks relatively the same as before.
До свидания и заткнись
-P

I've done a few more updates to address the aforementioned issues.
До свидания и заткнись
-P

That's quite an elegant way of improving the layout and flow, a lot more of the map seems to be relevant to the ctf gameplay now.

I like bran muffins

Very nice ctf map, I like the texturing and details a lot

You can definitely see there has been spend time and effort on this map.
Personally, I think the theme is very convincing to be gothic (not just due details like the skulls, but due the atmosphere and texturing also).

As described above; the flow is it's weakest point.
The map has 195k of WTR and at a lot of points, it drops my frames from 60 to 36 on a very choppy way.
After experimenting a bit, I noticed that when deleting one side of the map; my FPS were sill choppy but at a rate of 50.
So this map probably could use some PVS generating (genpvs after generating just /savemap

Thanks for the replies, my computer's been a little wonky as of late& haven't been doing many updates. I'll move the flags to either the middle of the rooms or beneath the skulls- leaning towards middle because of the sponsons you can shoot through in the corners next to the skull would be a less useful if the flag was directly below them. I feel that I may have messed up the flow with the addition of the gates on the inner walls, & am stuck between removing them or completely closing them forcing players to use the outer walls. Any suggestions?
До свидания и заткнись
-P

Finally an update!
I've removed the ladders & opened the doors instead, leaving two closed so it's a zig-zag pattern now.
I've also added two outer staircases for extra access to the outer walls.
I've moved the flags so they're in the mouths of the giant wall skulls & added a jumppad on the particles near the high coffins for access. You can also grab the flag from the two ledges that lead behind the skull to the outside walls.

EDIT: Another update to fix a few things, & add some new stuff after cutting down the WTR a little bit.
До свидания и заткнись
-P

I've done a complete revamp of the map, see changelog for details.

До свидания и заткнись
-P

What to say about it once more?

It's a nice looking map which represents the gothic theme perfectly. But the elegance of Cube Engine 2 has been forgotten. Although the details look great, keep them more simple for a gameplay map.
After checking out the map (updated) on my desktop, I still notice framedrops from 200 to 90(!) frames. This especially happens on the spiral staircase...

The map's layout feels a little bit too complex before actually getting from one place to another.I know it's fun to construct a map that let the players have to explore the map before actually being able to play, but too bad that doesn't work out well for the gameplay of Sauerbraten.