In England these wavy fences were made because they use fewer bricks than a straight wall. A straight wall would require two rows of bricks to be sturdy.
That is actually pretty cool logic to apply to it and not just making something pretty.
practicalmagic's comment on In England these wavy fences were made because they use fewer bricks than a straight wall. A straight wall would require two rows of bricks to be sturdy. | SpeakBits