What Are Ley Lines and Do They Really Exist?

Stonehenge, the Pyramids of Giza, and Machu Picchu are just some of the ancient monuments that are said to be connected by mysterious invisible pathways called ley lines. Given how little we know about these spectacular yet enigmatic landmarks, it’s sometimes been difficult for scientists to fully quell this theory or offer alternative explanations as to why they were built exactly where they were.