Roman Window Grille in Switzerland Reveals a Rare Detail of Roman Buildings
A Roman window grille in Switzerland was found with iron bars and nails intact, offering rare clues about ancient building techniques.

Archaeologists in Switzerland have uncovered a rare piece of Roman architecture buried beneath a collapsed wall. The iron window grille survived with much of its original structure intact, including two nails that once helped secure it in place.
The discovery came during excavations at Augusta Raurica, an ancient Roman settlement near modern-day Basel. Archaeologists found the grille about 1.7 meters below the ground near the site’s reconstructed Roman house.
A Roman Window Grille in Switzerland
The iron grille contains five vertical bars connected by two flat iron strips. Rings at the ends of the strips likely helped attach the grille to a wooden window frame. Two nails also survived with the object. These details give researchers clues about how Roman builders fitted ironwork into their buildings.
The grille was part of a masonry structure that has since collapsed. Archaeologists have not yet established when the building was constructed or what caused the wall to fall. Researchers are considering whether a fire weakened the structure or whether another collapse buried the grille under rubble. For now, neither explanation has been confirmed.
Why the Discovery Matters

Complete examples of Roman architectural ironwork are rare in Augusta Raurica’s archaeological collections. The newly recovered grille offers researchers a chance to study how Roman builders made and installed metal window fittings. A grille could provide security while allowing air and daylight to pass through a window. However, archaeologists have not established the exact use of the room or building where this example stood.
The object was found during a new excavation near the Roman house. Earlier digs took place in the parking area during the 1990s, but the latest work has revealed additional parts of a wall running east to west.
What Happens Next?
After archaeologists recovered the grille, they transferred it to the Augusta Raurica collection depot. Specialists will document its condition, examine its construction and carry out conservation work. Further study may help researchers understand the building and the circumstances that buried the window fitting. The team has not yet announced a date for the structure.
For now, the grille offers a rare physical link to everyday construction in the Roman world. Its surviving bars, rings and nails preserve details that are often lost when ancient buildings collapse.



