So far idea wise:
- A server shop (perhaps a few instead of just one large one).
- Library with an enchantment table.
- Train/Cart station of which has routes towards the north, south east and west of the map (in a straight line). I plan to have it as the main way to get out of the spawn.
- Some sort of arena for pvp
I haven't managed to find many underground city builds that are at least relevant. Especially ones that i can't download the world for and check it out. If anyone knows of one feel free to link me it.