Minecraft wiki entry for Building_a_metropolis, associated text: An important piece of planning and building a metropolis is the roads. Roads and pathways connect all the buildings and zones together and usually act to keep a sense of order to the space. Generally, larger areas should include more orderly roads while smaller spaces should have rougher, more mixed pathways. The sizes of roads should also differ by area to fit the spacing of buildings. For this reason, roads should generally be created as needed and not used to force buildings to follow their path. Materials such as cobblestone, coal blocks, obsidian, gravel, stone, sandstone, nether bricks, concrete, dirt paths, and terracotta are all popular blocks for roads and paths. Roads can also be decorated with plants, road lines, and lights. Generally, paths should be fairly flat so they can be easily used for quick travel. Adding options for travel along different roads such as minecart rails, ice lanes, or even just fences to tie horses to can increase the efficiency of roads. If you make a tunnel, it should be at least three blocks tall so players riding horses can use it. You should also be able to navigate the roads easily.