There was a Minecraft guide app that i used to use to watch Minecraft content back in the day and it also what started my journey into this beautiful game + it had images of in-game structures that i have never seen in the internet over the past 10 years !
The Minecraft guide app kinda looked like this with a blue background (i know that this is an icon to a game called Block Craft 3d but it was the closest thing to that app’s icon)