What is the distinctive architectural feature of medieval Cairene houses — a projecting wooden lattice window enclosure that allows inhabitants to see the street while remaining hidden from view?

• A Muqarnas
• B Qa'a
• C Iwān
• D Mashrabiya ✓

The mashrabiya is a projecting oriel window enclosed with intricate turned-wood latticework (kharat), allowing cool breezes to pass through while offering privacy — a defining element of historic Cairene domestic architecture that also inspired the English word 'mullion'.