SpY's 20-Meter Black Triangle Turns a Madrid Square Into a Surveillance Machine

A 20-meter equilateral black triangle now stands in Madrid's Plaza de Cibeles, directly in front of the Palacio de Cibeles. Spanish urban artist SpY calls the temporary installation PANOPTICON, and its dark, monolithic geometry cuts an abrupt formal contrast against the palace's ornate historic facade. It also intercepts the established sightlines across one of the city's most recognizable civic squares.

The project, documented by photographer Ruben PBescos and published by designboom, works through a simple double move: it obstructs and it reveals. The opaque triangular volume physically blocks panoramic views of the urban context around it. But discreet viewing apertures integrated along its perimeter invite visitors to step up and peer inside.

What's behind the apertures?

Each opening holds a display monitor. The monitors are wired to closed-circuit television cameras mounted at the apex of the structure, high above the square. Through those video feeds, visitors see fragmented live footage of surrounding traffic, pedestrians, and adjacent architecture — all shot from elevated overhead vantage points they couldn't otherwise occupy.

In other words, you can't see the city directly anymore. You see it the way a camera sees it.

Why call it PANOPTICON?

The name is a direct reference to Jeremy Bentham's architectural panopticon model — the prison design in which a single watcher can observe every inmate without being seen. SpY's installation positions the observer to look through surveillance feeds of the surrounding public space, flipping the usual dynamic. The watcher becomes a participant; the viewer becomes the watched the moment they step back into the square.

According to the project description, the work examines how digital tracking systems, public observation, and camera mediation govern movement and privacy in contemporary cities. It's a subject with particular weight in Madrid, where the installation sits in a heavily trafficked, heavily filmed civic center.

What does this change for the square?

For the duration of the temporary installation, Plaza de Cibeles gains a hard-edged geometric counterpoint to its Beaux-Arts surroundings — and loses its open sightlines to the Palacio. Visitors who approach get a mediated, overhead version of the same square they're standing in, delivered through CCTV monitors.

The gesture is deliberately double-edged. The structure restricts vision while offering a substitute for it, and that substitute is surveillance footage. Whether visitors read that as playfulness or warning likely depends on how comfortable they are being filmed on their walk through the plaza.

PANOPTICON continues SpY's practice of large-scale urban interventions that reframe how people perceive shared city space. For Madrid, it turns one of its most photographed squares into a working demonstration of how looking, being looked at, and being recorded have quietly merged in everyday urban life.