The lava plains that make the face in the Moon cover about a third of the near side and almost nothing of the far side.

The near side is where the crust is thin enough for magma to have reached the surface. Whatever caused that asymmetry — most likely the far side cooled faster, or a huge early impact rearranged things — it means the Moon we grew up looking at is not representative of the Moon. The other half is a monotony of overlapping craters.