From here you can follow the subcategories to the zone you wish to have more information of.
“The Harrowing is the fourth and final chapter in Diablo II (excluding Lord of Destruction, the...The Harrowing
“The Infernal Gate is the third chapter of Diablo II. The player travels to the Kurast Docks...The Infernal Gate
“The Sightless Eye is the first chapter of Diablo II. The player starts from the Rogue Encampment...The Sightless Eye
“Lord of Destruction is the fifth and climactic act in Diablo II, added when installing the...Lord of Destruction (Act)
This category has the following 6 subcategories, out of 6 total.