Helical stairs, also known as curved stairs or spiral stairs, are a type of staircase that feature a sweeping curve as they ascend. They are a popular choice for those seeking a dramatic and visually striking staircase solution. Helical stairs can be made from a variety of materials, including wood, metal, and glass, and can be designed to fit a range of styles and design preferences. They are often chosen for their unique shape and ability to create a focal point in a space.