All over Taipei you can find these feet paths. The idea is to take your shoes off and walk along it and where your feet hurt the most indicates what part of your body is out of whack. Example, if the heel of your foot hurts the most, your liver might be out of whack! Truth is, it hurts so bad I can't do it! It is river rocks set in cement standing up! It is painful to walk on for just a few minutes, never mind the whole path!