Border – Minecraft Wiki Placing or breaking a border block requires the worldbuilder or operator [Bedrock Edition only] ability, which can be granted to the player by an operator or host
Java Edition:Unbreakable Block Removal Methods - Minecraft Discontinued . . . Unbreakable block removal is a collection of methods that allow for normally indestructible blocks to be broken These include bedrock, end portal frames, barriers, end portals, nether portals, end gateways, command blocks, structure blocks, jigsaw blocks, and more
worldborder – Minecraft Wiki Sets the world border warning distance to the specified value Causes the screen to be tinted red when the player is within the specified number of blocks from the world border
Minecraft Worldborder Command - Size, Damage and Warnings By default every Minecraft world has a border with a diameter of 59,999,968 blocks, roughly 30 million blocks in each direction from center Most players never reach it, but the command lets you resize it to any value, move its center, and animate it shrinking or expanding over a set duration
World border – Minecraft Wiki Players cannot normally place and destroy blocks, nor interact with objects outside of the world border, as there are no hitboxes It is possible to place blocks outside of the world border, either by placing the block against one that is inside the world border or by using commands