How do i create fast a random minecraft world

Hello, I am totally new to UE4.

I want to create world of blocks, also buildings etc etc.

As far as I am concerned RN is that i have to create everything block by block. Buildings I understand but the world? It would take my entire life to create a world block by block.

Anyone can help me out?

Thank you,

build it in a modeling software.

Thanks for the Tip is there any Software that is free to use? I am still a student
Is there a specific reason why it does not work directly with the unreal engine?

You gonna have to build your own “Voxel engine” or see your “Minecraft” running at 10fps ^^