Courtyard
e.g. nālukettŭ, haveli
An open-to-sky space at the heart of a plan. A genuine thermal and daylight engine: hot air rises and escapes the central void by day, cool air settles by night, the well shades the interior, and rain is harvested. The building-science payoff behind Vastu's open-centre (Brahmasthan) rule.
Introduced in Lesson 3.3 Centre-Open and the Courtyard · coming soon