One of the big ways in which Minecraft 1.20 does this is via the implementation of new game mechanics such as archeology. Many other 1.20 features are in aid of this new mechanic, such as Trail Ruins.

Another method is Minecraft seeds that other players have discovered, including one from YouTuber markom58. All you have to do is enter the seed: 109235429672123840 and go to the coordinates ...