Now that I' built a network around the outside of Mitte I wanted to start connecting it up toward the center. My plan is to run a line from each of the rail stations on the ring in towards the middle and build stations where they meet up. Along each line will be industrial developments and on their borders will be more commercial zones.. In the areas between I'll have residential and industrial regions. Later I plan to take out the rail lines and convert the regions to grand boulevards.

So I went to Mitte, ran the rail lines inward from the eastern stations and discovered all three met at the same place, which was convenient. I build a largish medium density neighborhood between the middle and lower lines and a smaller neighborhood between the middle line and the river. Here's a map showing the structure of the lines:

Here's a pic of one of the industrial corridors

Here's the higher-density residential area. Initially I was getting a lot of abondonment and I had to upgrade several streets and add a lot of mass transit for it to work.

And here's the area near the river:

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Finally I went to all the regions what were getting rail commuters (Biesdorf, Kopenick, and Charlottenberg. I added some industry to all of them, improved the mass transit from the stations, and increased the residential density. I didn't make any major changes, so I'll skip pics for now.