Once you complete the event and eradicate the evil from the area, the Stronghold will become more of a public space allowing you to see other players in the area. They start out as enemy infested territories that must be cleared out by you and your party. Each Stronghold you find is in their own distinct location with their own unique storyline, objective, puzzles, and bosses. Strongholds are points of interest in Sanctuary that have been overrun by evil. Our Diablo 4 Strongholds guide explains why you’ll want to clear Strongholds and where you’ll find the 15 Strongholds in the Fractured Peaks, Scosglen, the Dry Steppes, Kehjistan, and Hawezar.

Once you’ve cleared the enemies out and completed a Stronghold’s task, the non-demonic denizens of Sanctuary will return, and, sometimes, give you access to a Waypoint or merchants. Strongholds are locations filled with enemies - concentrations of the various baddies you’ll encounter out in the wider world - who have taken over little pockets of Sanctuary. As you explore Diablo 4’s five unique regions, you’ll come across 15 Strongholds - three in each region.

Season 23 diablo 3