I recently started a server - PERFODIO - for mature players to have a nice, calm (mostly), place to play, whitelisted for safety and enjoyment.
I intend to keep the population quite small for a while, possibly expanding later.
Server is under development, and I will add things as time allows. You're always welcome to make suggestions as well!
If you're looking for somewhere to play, love building and exploring, and would like to join a vanilla server with untouched biomes, then drop a response below or on Discord with your details (IGN at least), and I'll add you to the whitelist!
Note that I'll usually login from around 4pm Eastern time, so bear with me. The server is based in the USA.