Fran Silvestre Arquitectos are no strangers to Minimalissimo. The Spanish firm’s typically grand and distinctively minimalist architecture has been celebrated widely, not least by us. Their latest project—The Fourth Room—is a modern open housing block to the north of Valencia, Spain.

This home does boast some wonderful views of the city, but the focus here is its clean, spacious, and brilliantly structured interior design. The day area is the only space that takes advantage of the three orientations of the house. Through the three openings the space changes as the day progresses with sunlight.

The house is structured through a space that organises all uses of the house, serving as an access point, storage area, and extension to the rest of the home—the fourth room. The new space can adapt to how the residents want to live in any given moment.

The clean lines and sense of tranquility of The Fourth Room is one thing, but what really shines through is the ability to transform the space and with it, the light.