![Concrete + Metal + Glass is the winning combination, and this modern house in Madrid, Spain is the proof - built in just 7 days, with a pool in the sky Concrete + Metal + Glass is the winning combination, and this modern house in Madrid, Spain is the proof - built in just 7 days, with a pool in the sky](https://cdn.trendir.com/wp-content/uploads/old/house-design/house-hemeroscopium-1.jpg)
Concrete + Metal + Glass is the winning combination, and this modern house in Madrid, Spain is the proof - built in just 7 days, with a pool in the sky
![This Butterfly Shaped Concrete, Glass & Steel House is a Minimalist Masterpiece | iDesignArch | Interior Design, Architecture & Interior Decorating eMagazine This Butterfly Shaped Concrete, Glass & Steel House is a Minimalist Masterpiece | iDesignArch | Interior Design, Architecture & Interior Decorating eMagazine](https://www.idesignarch.com/wp-content/uploads/Minimalist-Oceanfront-Estate-Carmel-California_1.jpg)
This Butterfly Shaped Concrete, Glass & Steel House is a Minimalist Masterpiece | iDesignArch | Interior Design, Architecture & Interior Decorating eMagazine
![Photo 1 of 13 in A Pool With a Glass Bottom Hovers Over Another at a House in the Portuguese Riviera from 35 Modern Homes That Make the Case for Concrete - Dwell Photo 1 of 13 in A Pool With a Glass Bottom Hovers Over Another at a House in the Portuguese Riviera from 35 Modern Homes That Make the Case for Concrete - Dwell](https://images.dwell.com/photos-6191803854900514816/6296884522224410624-large/designed-by-jose-guedes-cruz-cesar-marques-and-marco-marinho-of-the-portugal-based-firm-guedes-cruz-architects-the-wall-house-is-laid-out-in-an-open-box-plan-and-is-fitted-with-plenty-of-glass-windows-to-enhance-the-synergy-between-its-interior-and-exteri.jpg)