Historical clocks are timekeeping devices that have evolved over centuries, reflecting advancements in technology and design. Early examples include sundials, which used the position of the sun to indicate time, and water clocks, which measured time through the flow of water. These devices laid the groundwork for more complex mechanisms. By the 14th century, mechanical clocks began to appear in Europe, often found in church towers. Notable innovations included the pendulum clock invented by Christiaan Huygens in the 17th century, which greatly improved accuracy. Today, these historical clocks are valued for their craftsmanship and significance in the development of timekeeping.