What architectural element does the term "spire" refer to?

The term "spire" refers specifically to a tall structure that tapers to a point, typically found atop a building, such as a church or a cathedral. Spires are often seen as symbolic, representing aspiration and reaching toward the heavens. They can enhance the verticality of a building, drawing the eye upwards and contributing to the overall aesthetic and religious symbolism of the architecture.

The other options describe different architectural features. A decorative archway relates to entryways and transitions between spaces, while a large central dome usually refers to a rounded structure that crowns a building, particularly in styles like Byzantine or Renaissance architecture. A type of roof decoration is a general term that can encompass various embellishments but does not capture the specific characteristics that define a spire. The definition and function of a spire as a pointed structure distinguish it clearly from these alternatives.