This is a vanilla server with many different add-ons (NOT mods):
1) Custom world generation. Availability of an online map. New types of food, planting, crafting dishes, brewing alcohol, creating interesting “substances”.
2) In each biome, you can find various structures: new villages, dungeons, outposts, ships, sunken ruins, updated mines, ancient buildings hidden underground, and much more.
3) The ability to build railways, monorails, cable cars, and assemble multi-seat trains from trolleys.
4) Improved old crafts and added new ones that are not found in vanilla – tags, saddles, horse armor of all types.
And also the opportunity to ride a horse together.
5) Privat territories by chunks using special. block, the ability to cooperate or fight (improved dynamite + pvp around the world) with other players.
6) Augmented PvP system, with different types of swords and crafting custom armor (including non-standard materials: amethyst, copper, emerald and chain mail) and more.
7) Minor improvements, for example: the ability to decorate the bed with a flag, add an item to the sign, physics of trees and new particles, custom duration of day and night, as well as unlimited drawing range (chunks).
And there are many other features that you can find yourself.
All mechanics on the server work WITHOUT mods, you just need to install the resource pack (and, preferably, optifine, to optimize + 100% correct operation of the resource pack).