Farms

Zombie Farm

Drowned/Skeleton Loot & Head Double Spawner Farm

Slime/General Mob Farm

Ice Farm

Raid Farm

Gold Farm

Wool Farm

Iron Farm (broken in 1.11 update)

Wither Skull Farm (blown up)

Witch Farm

 

Future Farms

Flower Farm

Ink/Fish Farm

Wither/Nether Mob Farm

Guardian Farm

Mooshroom Farm

Cave Spider Farm

Enderman Farm

Iron Farm/Trading Hall