Which structure is erected to commemorate the life of a deceased person, often made of stone or metal?

The structure that is erected to commemorate the life of a deceased person, often made of stone or metal, is best described as a monument. Monuments serve as lasting tributes and can commemorate significant individuals, events, or groups. They often take various forms, including statues, obelisks, or elaborate structures, and can be simple or grand, depending on the significance of what or whom they represent.

While tombstones and markers also commemorate the deceased, they are typically more personal and direct reminders that mark specific burial sites, whereas a monument often represents a broader commemoration and can be intended for public recognition. Sarcophagi are more specifically designed for burial purposes and, although they can be ornately decorated and serve as a tribute of sorts, they are primarily meant to hold the remains of the deceased rather than serving as a commemorative structure in the broader sense.

Thus, a monument captures the essence of honoring someone’s legacy in a public and often artistic form, making it the most suitable choice for this definition.