Stonehenge is roughly about 320 feet big in diameter. The 320 feet include the stones and the outer 6 foot deep ditch that surrounds Stonehenge.

You may be wondering the sheer scale of one of the great wonders of our time. So just how big is Stonehenge? Stonehenge which is located in England who's tallest stone is 22 feet high and another goes 8 ft. below ground. You can find more information here: http://www.stonepages.com/england/stoneh...