You Die !
Not much. If you walk to the bottom of the earth, not much happens there, either. Gravity is slightly higher at the poles, but it is unnoticeable.
people does walk in spain.
they get arested
tourists walk around.
sometimes you float in the air a bit or walk a bit slowly
you turn into sand
You walk funny.
he will walk
you walk away
it eats you
Nothing happens. Until modern transportation was developed people walked everywhere. People in many countries still need to walk where they are going.