So we made this map just for fun
It has:
-a jail of course
-2 secret bases
-secrets
-auto food system for the prisoners
-a house to live
-a super smelter
-an auto storage system in one of the secret bases
-random explosion-testing areas
-a random Formula 1 car (not finished)
-a keycard system
-an ordering system(not complete)

and also
one secret base's entrance is in the house(right next to the smelter(pull the upper lever))
and the other is at the beacon

Version: 1.17.1