Posters are large printed sheets of paper or other materials that display information, artwork, or advertisements. They are often used for promotional purposes, such as advertising movies, concerts, or events. Posters can also serve educational purposes, showcasing information about topics like science, history, or public health. Typically, posters are designed to be visually appealing, using bold colors, images, and typography to attract attention. They can be found in various places, including schools, public spaces, and businesses. Some famous examples of posters include those created by Alfred Leete during World War I and the iconic Hollywood movie posters that promote films.