This jaw-dropping Portuguese residence by Guedes Cruz Architects is a concrete castle located in Cascais, a coastal resort town in Portugal, just west of Lisbon. While there’s much to love about the vast and monolithic structure — immense yet and approachable with its indoor-outdoor flow — the Wall House’s most distinctive feature has to be the floating, glass-bottomed pool housed above a second pool at ground level. With strong features in concrete, glass and wood, the patio house is designed to encompass the outdoor lifestyle typical of the Mediterranean, yet with the ability to withstand the strong Atlantic inclement. The home features the extra soft outdoor sofa by Living Divani from Studio Italia.