A baldachin is a ceremonial canopy that is often supported by columns or posts. It is typically made of rich fabrics like silk or velvet and is used to signify importance or honor in various religious and state ceremonies. Baldachins can be found in places such as churches, cathedrals, and during royal events. Historically, the term "baldachin" comes from the Italian word "baldacchino," which refers to a type of fabric originally made in Baghdad. One of the most famous examples is the Baldachin of St. Peter's Basilica in Vatican City, designed by Gian Lorenzo Bernini.