: Massive stone structures, like the famous 1931 Achille Knapen well in France, designed to stay cool during the day.
: While historical "dew towers" often had low yields (only a few liters a day), modern low-tech condensers are more efficient. 🏠 Air Well (Architectural Feature) air well
: Uses lightweight surfaces that cool quickly at night by radiating heat into space. : Massive stone structures, like the famous 1931
