The Stone Bridge is a historic structure typically made of stone, designed to span a river or valley. These bridges are known for their durability and aesthetic appeal, often featuring arches that allow for the passage of water beneath. Many Stone Bridges have been built throughout history, showcasing various architectural styles and techniques. One of the most famous examples is the Old Stone Bridge in Regensburg, Germany, which dates back to the 12th century. This bridge is notable for its impressive design and has been recognized as a UNESCO World Heritage site. Stone Bridges continue to be admired for their engineering and historical significance.