This is a project I've been working on for a while now and yes I've uploaded this before, but it ran out of steam long before I got it to where I wanted it, so I deleted the old post and uploaded a new project so that the most people possible could see it. This would be great for your server as it's a great seed to start with and you will have places for you and all your friends to live for a while until you add your own epicness.
It includes the over world Mountain network with a total of 13 buildings, as well as an NPC village I put in just for fun. The above ground structures are also networked with the underground portions of the kingdom.
The underground portion is larger than the above ground part with a large amount of residence/business buildings. There are also four huge dungeons I've connected which are easily accessible. Two of them include end portals.
Download, explore, comment please :) and diamonds are always appreciated as the longer it stays on the hot list the more people get to see it. Thanks
Even if you downloaded an earlier version delete it and download this one as its much more complete and polished than all previous versions.
Oh yeah and if your wondering "Why all the brick?", I've never really used it before, but once I started I couldn't stop. I love it now, so it will probably be involved in all my future builds in some way.

If you like this build, you will love this http://www.planetminecraft.com/project/matt-and-rovas-ultimate-steam-punk-alliance/