Minecraft wiki entry for Map, associated text: A fully zoomed map.
Having a map in hand does not stop the ability to see ahead.
A world being recorded onto a map.
Nearly fully explored map.
A map edited to the scale of 1.
A map mapping the Sky Dimension.
A village and how it is represented on a map.
A map containing a custom image made by placing a large number of blocks.
A completely explored map.
A diagram showing how maps zoomed out before Java Edition 1.8. Notice how the larger maps have borders made of half and quarter small maps.
From 1.8, zoomed maps are aligned to this grid exactly.
A map of a Large Biomes world.
A comparison of maps between versions in Pocket Edition Alpha 0.14.0 and 0.16.0.
A map view of a mushroom biome, showing that mycelium appears purple on a map.