Ancient City

Ancient cities are large, sprawling structures generating exclusively in deep dark biomes in the lowest levels of the world. The structure's centerpiece is a large frame made of reinforced deepslate. Reinforced deepslate can be broken, unlike bedrock, but it will take a very long time and will not drop anything. Leading away from the reinforced deepslate frame will be two-story corridors. The corridors will have wool or carpet floors to prevent sculk sensors from detecting vibrations in them. Off to the side of the corridors smaller structures will generate, many of them having the chance to contain one or two loot chests.

Underneath the main frame will be a room filled with a variety of different redstone components, designed to demonstrate redstone's basic functions. The room is accessed by a piston door in the front of the "plinth" supporting the frame. In some ancient cities a chest will generate in front of the frame and will contain a golden apple. Eating something near that chest will open the piston door for a short time. Another iteration of the frame will have a single chiseled deepslate block in front of it, and making a noise on top of it will open the door. The third possible mechanism will open the door when any vibration is made in front of the frame.

As it is generated in a deep dark biome, parts of the ancient city can become overtaken by sculk. Sculk shriekers will generate much more frequently in ancient cities, making the environment much more dangerous than the normal deep dark biome.

Ancient cities have some of the most valuable loot in the game. The more common items that can be acquired from ancient city loot chests are coal, bones, soul torches, books, enchanted books, potions of Regeneration, disc fragments, amethyst shards, echo shards, glow berries, sculk, candles, bottles o' enchanting, sculk sensors, and enchanted iron leggings. Slightly rarer items are sculk catalysts, compasses, music discs, leads, name tags, saddles, enchanted diamond hoes, diamond horse armor, enchanted diamond leggings, enchanted golden apples, and the Otherside music disc. The rarest items of all are the ancient city's unique armor trims, Ward and Silence.