“Horizon,” a free interactive installation at the Plaza at Avenida Houston, is running July 4 through September 7, 2026 — six dome-like structures set between the George R. Brown Convention Center and Discovery Green, each inviting visitors to step inside, take a seat, and gently rock. That motion is the interface: rocking the chairs triggers a custom blend of light and soundscapes, turning a small, calming gesture into a personal audiovisual experience. It’s the work of artist Olivier Landreville in collaboration with sound-and-light designer Serge Maheu, produced by international public-art producers Creos and Init.
The body as the controller
What makes “Horizon” more than mood lighting is that you drive it. There’s no button, no screen, no app — the input is the rocking of your own body, and the output is light and sound tuned to that movement. That’s a quietly sophisticated interaction-design choice: it lowers the barrier to zero (everyone knows how to rock a chair) while making the experience feel personal and responsive rather than pre-recorded. It’s the same embodied-interface idea this site covers in gallery and research contexts — motion as input, the environment as output — but staged for a general public who never signed up for an “interactive art” experience and just found six glowing eggs on a downtown plaza.
Serge Maheu and the Montreal lineage
The collaboration is worth noting for who’s behind it. Serge Maheu is part of the fertile Montreal scene of light-and-sound and interactive-installation artists — the same milieu that produces the immersive, sensor-driven public works that tour internationally through producers like Creos. That pedigree shows in the ambition: six coordinated domes, custom audiovisual systems, and a design meant to withstand months of unsupervised public use on a busy urban plaza. Public interactive art has to be robust, legible, and rewarding to a first-time passerby in seconds, which is a genuinely hard design brief.
Why free, public, and temporary matters
Placing responsive, technologically-mediated art in a free public plaza does something a gallery can’t: it meets people who would never buy a ticket to a digital-art show. A parent with kids, someone on a lunch break, a couple walking from the convention center — all of them can sit, rock, and discover that the space answers back. That accessibility is the throughline connecting “Horizon” to the projection festivals and immersive attractions this site has been tracking: interactive art steadily becoming civic infrastructure, showing up where people already are rather than waiting for them to seek it out. It’s on view through early September, and it costs nothing.