The Lyceum is listed as one of the objectives for the No Stone Unturned achievement, yet nobody seems to know where it is. Where is it?
Diablo III Achievements – Where is The Lyceum? How to Find It
achievementsdiablo-3
Related Solutions
I found the report on a dead body named Wortham Villager Corpse, he was very well marked and appears to be a non-random encounter. It was just prior to getting to Leoric's palace as @Alok mentioned, in the Northern Highlands.
The Villager’s Journal spawns in a Old Keepsake Box at the Old Ruins, it was previously reported in The Lyceum a random dungeon whose location is discussed in this thread. It was unobtainable prior to patch 1.0.3, which led to most of the confusion around it but it is now dropping again.
Big Bad Voodoo doesn't really count as a pet,it is more like AOE ward.
On lvl 30 you will get fetish army and it makes an easy achievement.
Also additional followers you get from quests like Tyrael,Leah... don't count.But main followers templar,enchantress and scoundrel do.
Best Answer
The Lyceum is one of the random dungeons in the Southern Highlands. It has a fixed spawn point but shares it with several other random spawns. The entrance area looks like this:
Its spawning place is slightly northeast of the entrance to the Southern Highlands:
This spawn point is shared with The Revenge of Gharbad, the Empty Servants House, Ancient Pyre or the event pictured below, among others (you can see the similarity of the place, also it seems like it's the only place which can host such a large environment):