Consisting of concentric circles of stone surrounded by a moat (called a "henge"), Stonehenge was constructed in several stages over thousands of years.
Pillar glass vase in different height and diameter. Clear cylindrical design is great for spotlighting river stones or colorful marbles piled in the bottom.
Another form is the menhir, a simple upright stone usually placed with others to form a circle, as at Stonehenge and Avebury in England, or a straight alignment, as at Carnac in France.