I was building a Zelda castle in minecraft and it suddenly won't let me build any higher. I wasn't even near the clouds. What do I do?
If is creative then put super flat land and rebuilt it but if is in survival then go to a other area where is more low ground.
Give up. Pack the whole thing with TNT and light it up.
build it on a low elevation. there will be mountains and stuff, build it at the bottom of one
Make sure you aren't out of materials...
Did you turn clouds off? You might have hit the block limit.