A chance conversation with a distant relative led Megha Mohan to Palayil, the ancestral tharavad (a house designed around women) in the southern Indian village of Tholanur. Her great-grandmother, Palayil Sreedevi, was the last woman in her line to live in one. The Nair community, a matrilineal caste, built these structures for centuries: men left at 12 to train as soldiers, returning only to sleep in outhouses, while women ran the show. Mohan's book "Herlands: Lessons from Societies Where Women Make the Rules" traces real female-built systems, but when she went looking for Palayil in 2024, she found only a groundkeeper's house, a serpent shrine, and neighbors' memories. The tharavad was demolished over a decade ago, undone by male-written laws.

Still, surviving examples like Kandath, a homestay 20 minutes away, reveal the architecture's genius. Custodian Sudevan Bhagwaldas showed Mohan the purathalams - raised platforms where men and women lounged diagonally opposite each other. "Acoustically, no word spoken by the women can be heard by the men and vice versa - even if you should shout," he said. The kitchen sat in the northeast so monsoon winds from the southwest would carry hot air away from the house, sparing women's bedrooms on the western side. Off those bedrooms: a room for childbirth and another for menstruation. In a tharavad conserved by architect Benny Kuriakose, a corridor on the ground floor is labeled "Corridor with rooms for menstruating women and pregnant ladies."

Unlike the exile of chaupadi, the period room here was a place of rest - women were catered to, excused from chores, and given a room of their own. The architecture also accommodated sambadhanam, a union between equals that either party could dissolve. A chuttu veranda (outer corridor) provided a discreet route for conjugal visits. "The birth of a girl child was more prized than a male child," said gender academic Lekha NB, "because of the role a woman has in physically carrying the progeny." But Mohan doesn't romanticize: tharavads were caste structures. While Nair women read in the courtyard, lower-caste women labored in semi-bonded conditions outside. "A house for women's bodies, yes, but not for all women." The system ended in the early 20th century, codified out of existence. Palayil Kalyani built a house for her daughters; the walls fell. But the lesson remains: keep your shelter, keep your independence, keep the key.