The Unexpected Evolution of Windows

Windows were originally just empty holes in walls to let in light. It was only after centuries of innovation that we began covering these gaps with transparent glass to keep out the elements while maintaining our view.

Before glass became affordable, openings were often covered with translucent animal hides or thin slices of stone. The invention of clear, durable glass transformed windows from simple air vents into climate-controlled gateways. Today, modern glass technology even allows windows to block heat while letting light pass through. It is fascinating how such a simple architectural feature evolved into the sophisticated barrier we rely on today.