I have built a Minecraft server (1.9) on my Raspberry Pi, but brcause of the poor CPU (1 GHz), it may be VERY slow.
I haven’t built a server city in it, even I haven’t tested yet, and you can hava a try :-) .

The server address is fxzjshm.xicp.net.

If it not works, you can try:

Current port info: