At a quarter past seven on a wet Tuesday evening, the long room at Folio House in Copenhagen holds forty-one people and almost no sound. A woman in a camel coat turns the pages of a Portuguese novel. Two students share a lamp. Someone near the window has fallen asleep over a biography of a nineteenth-century botanist, and nobody minds. The only rule, printed discreetly on a brass plate by the door, is that phones stay in the cloakroom. Membership costs roughly the price of a monthly gym pass, and the waiting list runs to eleven hundred names.

Folio House is one of perhaps two dozen such places that have opened across Europe and the Americas in the past three years, and the phenomenon is stranger than it first appears. These are not bookshops with cafes, nor co-working spaces with shelves. They are rooms whose entire proposition is concentrated attention, sold by subscription. In Mexico City, the Biblioteca Lenta occupies a restored 1920s townhouse in Roma Norte. In Melbourne, a former telephone exchange has become the Stillwater Reading Society, with oak carrels and a strict no-laptop wing.

What unites them is a shared diagnosis. Their founders, almost without exception, describe the same experience: they stopped being able to read. Not literally, but in the sustained, immersive way they remembered from adolescence, when a novel could consume an entire weekend. The phone, the open-plan office and the endless small obligations of connected life had eroded something, and they suspected they were not alone. The waiting lists suggest they were right.

Paying for permission

Hanne Lykke-Brandt, who founded Folio House after a decade in publishing, is candid about the paradox of charging money for what public libraries still provide for free. “The public library is a treasure, and we send people there constantly,” she says. “But a library today has to be everything to everyone: a job centre, a children's club, a warm place in winter. That is its glory. We only do one thing. People are paying for the permission to do nothing else.”

The design of these rooms is carefully calibrated to support that permission. At Biblioteca Lenta, the architect Tomás Echeverri-Luna lowered the ceilings in the reading alcoves, arguing that people concentrate better in spaces that feel sheltered. Lighting is warm and low, pooled at the level of the page. Chairs are chosen for ninety minutes of stillness rather than for photographs. Acoustic felt is hidden behind the shelving. Every detail is designed to reduce the small frictions that tempt a reader to look up.

A reading room is an argument that attention is worth protecting, and that it is easier to protect together than alone.

Critics have been quick to point out the obvious: that silence has become another amenity for people who can afford it, and that a subscription reading room is a symptom of the attention crisis rather than a cure. Several founders accept the charge. Stillwater offers a third of its memberships free to students and pensioners, and Folio House runs open evenings every Sunday. Still, the social composition of most rooms skews young, urban and professional, the same crowd that fills natural-wine bars.

And yet it is hard to spend an evening in one of these rooms without being moved. There is something quietly radical about forty strangers choosing the same activity, in the same space, without speaking or performing. It resembles a congregation more than a club. When the lights dim at ten o'clock at Folio House, readers close their books with the reluctance of people leaving a warm bath, and several linger in the cloakroom before reaching, almost shyly, for their phones.