Infante Poblete Montt Suspends a Concrete Lookout over Zapallar Bay from the Top of El Morro Hill
On El Morro hill in Zapallar, Chile, a 400 m² board-formed concrete house rises above trees and rock to frame the entire bay in a single gesture.
Zapallar is one of the most built-over stretches of the central Chilean coast, and most houses here handle the view the same way: a glass box pointed at the Pacific. R.I. House, completed in 2024 by Infante Poblete Montt under lead architect Gerardo Infante R., starts from a better site than most. It sits on top of El Morro hill, above the pines and granite outcrops, with the whole bay laid out below.
The architects call the 400 m² house a suspended lookout, and that is a precise description. Instead of trying to disappear into the slope, the house commits to two materials and gives each one a single job. Board-formed concrete projects outward and frames the view. Grey stone holds the hill and carries you up through it. The result is a building that reads clearly from a distance and stays specific up close, which hillside houses rarely manage at once.
A House Read from Above



The aerial views show the logic plainly. The house steps down the slope in long horizontal bands, and every band faces the bay. Gravel roof bays and a pergola make the top of the building a fifth facade. On a hill where neighbours look down on you, that is a responsible choice and not a decorative one.
The top-down shot is the most telling. A cobbled courtyard, stone-clad walls, planted beds and a slatted bridge sit inside the concrete frame. From above, the house looks less like an object and more like a terraced garden that someone roofed over in places.
Concrete Fins as a Viewing Instrument



The garden facade is defined by a row of projecting concrete fins that divide the long elevation into a sequence of balconies. They work like blinkers. Each room gets its own framed slice of the bay, and the fins cut down side views and western glare. A long glass front would have given you the panorama all at once; this gives it to you in measured portions.
The board marks matter here too. At sunset the timber grain in the concrete catches the low light and softens what could have been a hard, repetitive elevation. The dark tiled pool and reflecting water at the base double the rhythm of the fins without adding any new material.
Stone Walls That Hold the Hill



If the concrete is about looking out, the stone is about climbing in. Battered granite retaining walls line the stairs and passages, and the routes between them are narrow and shaded. You walk up through compressed, walled spaces with the concrete volume cantilevered overhead, and the view only opens once you arrive.
This is the strongest move in the project. The base belongs to the hill and the upper floors belong to the horizon, and the stair is where you cross from one to the other. The stonework has the weight to make that change register.
Terraces Built for Sitting Still



The covered terraces are where the lookout idea becomes actual daily life. Lounge chairs line up along black steel railings between concrete piers, all facing the pine headland and the open sea. The deep soffit overhead shades you, and the piers mark the edge without blocking anything.
We like how ordinary these spaces are allowed to be. There is no feature furniture or styled vignette, only a long balcony, a row of chairs and the bay. The architecture did its work when it set the depth of the overhang and the height of the rail.
The Cantilever and Its Shadows



From the side, the concrete canopy shows how much it projects past the stone steps below. Stacked beams and freestanding columns carry the roof over the terrace, and tree shadows move across the board-marked walls all afternoon. The structure is legible and not overworked.
Under the canopy, granite paving and stone columns bring the base material up to the terrace level, so the two systems meet where you stand instead of at a hidden joint. Sliding glass doors make the edge between inside and outside a matter of season, not design.
Interiors Kept Quiet



Inside, the concrete ceiling keeps its board marks and the palette stays narrow: grey upholstery, round glass tables, a slatted timber wall around the fireplace. The living room opens straight through the glazing to a dining table on the terrace, so the exterior room gets as much weight as the interior one.
The stairwell repeats the framing move from the facade. Steel handrails and concrete walls direct the eye out to a balcony, the hillside and the water. Even the circulation is set up as a viewing device.
Dusk, Fire and Ferns



After dark the house turns inward. A fire pit anchors an outdoor sitting area facing the coastal hills, and a fern-filled courtyard sits under a cantilevered balcony with a lamp glowing in the window. The ferns and granite curbs bring in a damp, shaded ecology that the sunlit terraces never touch.
That contrast is the point. A lookout house could easily be all exposure. These planted, enclosed pockets give you somewhere to retreat to, and they make the open terraces feel earned instead of relentless.
Plans and Drawings




The plans confirm the linear strategy. On both levels, the rooms line up along a long front terrace, so almost every space gets direct access to the view. The upper floor arranges bedrooms and bathrooms around a central living area, and the lower floor holds living and dining rooms, more bedrooms and the stairs that descend the slope.
The sections are where the site becomes clear. The house steps down a steep grade, the stone base takes up the change in level, and the pool volume sits below. The elevation reads as a long, low, glazed upper floor resting on heavy stone walls, which is exactly the lookout-over-plinth idea the photographs suggest.
Why This Project Matters
Coastal Chile has produced a lot of distinguished concrete houses, and the risk now is that the language turns into a style. R.I. House avoids that by tying each material to a task. Stone holds the ground and shapes the approach. Concrete projects, frames and shades. Glass appears only where the view needs it. None of these decisions is new, but they are consistent all the way through, and that consistency is the achievement.
The broader lesson is about how you deliver a view. Infante Poblete Montt does not hand the bay over in one sweep of glazing. They make you climb through stone first, then divide the panorama into framed bays, terraces and stair landings. On a hilltop where the view is the main asset, holding some of it back is what makes the house worth occupying.
R.I. House by Infante Poblete Montt (lead architect Gerardo Infante R.). Location: Zapallar, Chile. Area: 400 m². Year: 2024. Photography by Nicolas Saieh.
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