Beneath the tranquil surface of Lake Michigan, researchers have uncovered an extraordinary 9,000-year-old stone structure, sparking intrigue and debate among archaeologists and historians alike.

Travertine, limestone's sister, is another top stone for a luxe look in the kitchen ... They’re polished just enough to create a smooth surface but not so much that they become shiny.

Two ancient stone circles have emerged from the grassy wilds of Dartmoor, offering a clearer picture of life 5,000 years ago.