Posting my city as well...
Though this layout is not really big, it still took me a full week to complete.
It is my first town with a monorail, and instead of putting it on big ugly black supports I thought it might be a good idea to integrate the track into the streets.
Therefore I had to raise the entire scene by one brick, allowing the track to be on the same level as the cars on the streets. I used only legobricks to do this (mostly technic beams, and thick baseplates).
It took nearly all my baseplates, because there have to be two layers: the bottom one with big gray baseplates, soccerfields and tan baseplates, and off course the regular streetplates on top.
The train runs smoothly throughout the layout, underneath the castle-ruin I made a second stop so that the train can be completely hidden in the tunnel.
It took some time to figure out what space the train needed, and all the buildings, fences and even flowers are placed accordingly.
The start-stop switch at the red station is activated by turning the red seat in the center of the platform (the train will ride in the direction the minifig in the seat is facing).
If I had had more rocks and straight rails I would have completely covered the space where the small bridge is in the back... If I only had....
I used tiles to connect the track, it is exactly four wide and fits perfectly between two baseplates.
The red building that says Stadhuis in Dutch (translation townhall) I made by using a picture of a real townhall somewhere in the U.S.
The firestation houses the 6340 laddertruck, this fits because the station has no backwall and so the truck is sticking out into the white building...
Here is the link:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=163518