Exterior, Wood Siding Material, Concrete Siding Material, House Building Type, and Flat RoofLine The owner of the house—founder of Ecosteel, a company that designs and manufactures minimalist but high-performance framing systems in steel and aluminum—created the motorized, 18-foot-tall glass sliders that bracket the living area.  Photo 4 of 15 in Two Ponds Bookend This Concrete-and-Wood Residence in Portugal

Two Ponds Bookend This Concrete-and-Wood Residence in Portugal

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The owner of the house—founder of Ecosteel, a company that designs and manufactures minimalist but high-performance framing systems in steel and aluminum—created the motorized, 18-foot-tall glass sliders that bracket the living area.