Barend Koolhaas' triangular-plan House in Almen has two black wooden walls and a glazed one

Architect Barend Koolhaas's from BK just unveiled his triangular-plan, energy-efficient House in Almen.

Located in the Dutch village after the project was named, this extraordinary home was designed around a long, floor-to-ceiling window that blurs the boundaries between the inside and the outside. This wall not only floods the home with tons of natural light but it provides a constantly changing view into the pristine rural landscape.

Barend Koolhaas worked for OMA and IDEO before setting up his own studio in Amsterdam and, yes, he is a relative of Rem Koolhaas. His latest project, House in Almen, was designed around one of its three exterior walls, made entirely from huge glass panes. This crystalline skin floods the open-plan living areas with daylight and ventilation, framing a cluster of trees, horses and farms behind.

The sitting area was effortlessly created around a lean fireplace with scattered black details that match the darkened, locally sourced Douglas fir walls outside. Upstairs, the master bedroom has an en-suite bathroom tucked beneath the roof’s slope and a large skylight overlooks the treetops.

Although this home was built with a tight budget, it manages a great energy-efficiency thanks to an ample insulation, installed heat exchanger and ventilation system.