Stone Tower

The Stone Tower is a large grey tower of stone bricks, built in a medieval style, that the game generates at random in the forest once your campfire reaches level 3. The wiki lists it as an Uncommon structure of type Tower. Its octagonal outline, the dark stone trim near the foundation and the double wooden door at the front make it easy to tell apart from other buildings.

Reaching the top takes two kinds of stairs. First comes a vertical ladder fixed to the wall, then a winding spiral staircase that leads to the upper floor, and the wiki adds that the stair up to the third floor has a broken wall. The top floor usually holds a chest with loot, and one to two Mace Cultists defend the tower, so it is worth planning for a fight before you climb.

The loot is split into four groups. Fuel covers Coal, Fuel Canister and Oil Barrel. Scrap covers Bolt, Sheet Metal, Broken Fan, Old Radio, Broken Microwave, Tyre, Old Car Engine and Washing Machine. Special covers Chest, Armor, Cake, Bandage, Medkit, Rifle, Revolver Ammo and Rifle Ammo, and Mossy Coins are the currency drop.

One tip on the page says that hiding inside a Watchtower at night keeps you away from the Deer, the Owl, the Cat and the Ram. It also notes that players sometimes miss a new structure because they walk past it instead of going in.