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.
tourists walk around.
they get arested
people does walk in spain.
sometimes you float in the air a bit or walk a bit slowly
he will walk
it eats you
you walk away
you turn into sand
You walk funny.
Nothing happens. Until modern transportation was developed people walked everywhere. People in many countries still need to walk where they are going.