Keystone

Central stone locking an arch.

Overview

Keystones, made of stone, secure arches, often with decorative carving.

Core Characteristics

• Central and structural.
• Decorative potential.
• Classical and Gothic use.

Notable Examples

• Ponte Vecchio (Italy, 1345, keystone arches).
• Pantheon (Italy, 126 CE, keystone details).

Architectural Connections

• Classical: Structural focus.
• Infrastructural: Bridges.
• Roman Architecture: Core movement.

Influence and Legacy

Led by Roman engineers, it ensures arch stability.

Related Concepts & Techniques

Masonry (technique), Structuralism (theory), Arch (element), Gothic Architecture (movement)