If the curve radius is less than about six meters the roof will tend to look like a normal pitched roof with a strange mixture of pitches.
													
																	How to make a round roof minecraft. 
									
	
		
	
																	Allowing for the very thick walls one gets in minecraft that give a usable internal space of 4 8 meters. 
																	This roof design is common in the original villages produced by minecraft s terrain generator and is useful for small buildings. 
																	The building in the image is 6 10 meters. 
																	But if you have your heart set on circles or spheres here s a trick. 
															
													
									
	
		
	
																	Sufficient for one or two rooms. 
																	In a world where everything consists of squares and cubes creating anything that s perfectly round in your minecraft world is impossible. 
																	You can come close by stacking blocks. 
																	At smaller scales it is easier to correctly interpret a dome structure as curved but other curves.