Minecraft blocks of space are known as chunks. Mojang loves the number 64, that's the number of most items that can be in a stack, and a chunk is a 64x64 block.

This is the easiest way to see the chunks in the game visually. Unfortunately, players can only properly see chunks and their borders in Minecraft 1.19 Java Edition.

Chunk loading in Minecraft is complicated but if you know how to use it can be incredibly useful! So heres a crash course!