Windows...

http://www.archdaily.com/424152/migliari-guimaraes-house-domo-arquitetos/5226a3c5e8e44e03f400011d_migliari-guimar-es-house-domo-arquitetos__mg_8085_foto_haruo_mikami_p_b-jpg/
http://www.archdaily.com/375102/house-for-pau-and-rocio-arnau-tinena-architecture/519802fbb3fc4b96d700009f_house-for-pau-rocio-arnau-ti-ena-architecture_2-jpg/
http://24.media.tumblr.com/tumblr_lzohp8b3Vd1qahakgo1_400.jpg