For this Fortnite challenge, Slone will ask you to visit the Guardian Towers. These structures are recognizable anywhere, and almost all similar.
Made of black stone, several houses are located at their bases -- where you will find chests to search for equipment -- while at their top sits a kind of magical portal called a Launcher.
Where are the Guardian Towers located?
The Guardian Towers are six in number, and scattered all over the island.
Several challenges have already asked you to visit these towrers, which can be found on the map below.
Note that you only need to visit three in total, so you play smart and choose an area while you're passing over the island on the Battle Bus
The only real difficulty is that you'll likely encounter enemy players attempting the same challenge. Arm yourself as quick as you can!