Great work. Keep it up!
Interesting, excuse my inexperience but are those layers set up as alpha or weight blends?
Following this one on eat3d, great project bud
Work on the building - Modelling macro details and UVs on catwalk, base and the large disc. Took some time learning particles and used a heat wave + laser beam on the disc.
Texturing the building in progress. The catwalk was ending abruptly into the cliff on left. So I added a lighthouse base and a cap for the cat walk. Now it looks like the catwalk has some connection with rest of the map. If I get time, I will make a metal stairway that goes upto the platform.
I like the overall setting of your scene! You do a great job of portraying perspective as well 
Keep up the good work
Nice, it’s really coming to life with the particle effects on the structure. Hope you can share this when you’re finished – I love the idea of exploring this place, finding some path up to that causeway and crossing into the structure, looking down at the sea below…
Are you planning an interior for the structure?
AndrewHurley: Thanks!!!
acatalept: Thanks!! Yes I will be sharing the map even though it is pretty small. But you can walk around and look at stuff. Right now, I dont have plans for interior, but will be expanding the map with a stairway going upto the lighthouse and up into the catwalk. But dont know when i will be able to do that. We’ll see. Here are some more updates before i call it a day. Thanks for the comments guys 
Closed-off the mine interior since there will be lot of work to finish the interior cell.
Stairs up the light house even though you can’t go up there yet.
Nice work
Some more updates: Added a metal blockade to prevent the player from going into water and some foliage on cliff.
I am thinking of closing-of this project pretty soon. No point in working on for ever
Next steps: Need to tweak the Diffuse and NM on many textures. This scene is 95% tileables. Only unique textures are for the rocks and foliage. I will be adding 2 types of debris using mesh - metal debris and garbage. Also have plans to add a space-station like object high above the tall tower. This will be just an alpha card with smooth opacity. Plus paint some close-to-ground foliage.
Wow, nice process! (: Would love to see the final project.