The threshold is a small part of a doorway that may go unnoticed at first glance, yet for centuries it has carried symbolic and practical weight in architecture.
It is the lower section of the door frame, placed where the floor meets the entrance — the point we instinctively step over when entering or leaving a room.
Although it may seem like a minor element, thresholds have always played an important role in both traditional and modern architecture.

In the past, thresholds were often built higher to block rainwater, dust, or even insects from entering. But their meaning was not limited to functionality; thresholds symbolized the boundary between outside and inside — between the noisy, passing world and the peaceful, secure space of the home.

Thresholds in Contemporary Architecture

Today, while their protective role has become less prominent, thresholds still maintain a subtle yet impactful presence in interior design. Choosing the right material can add identity and detail to a space:

• At the main entrance, thresholds can define the boundary between public and private areas.
• Inside rooms, they help with visual continuity when matched with flooring or wall finishes.
• In modern design, thresholds often appear as slim strips of metal or stone, bringing precision and unity to the overall aesthetic.

Examples of Threshold Applications in Interior Design