Outdoor, Back Yard, Trees, Grass, Large Pools, Tubs, Shower, Large Patio, Porch, Deck, Wood Patio, Porch, Deck, Swimming Pools, Tubs, Shower, and Plunge Pools, Tubs, Shower The Wall House in Cascais, a coastal town in an area known as the Portuguese Riviera, is an 11,840-square-foot home made with concrete, wood, and glass—and boasts a pair of large swimming pools on two levels. 
Designed by José Guedes Cruz, César 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 exterior spaces.  Photo 1 of 13 in A Pool With a Glass Bottom Hovers Over Another at a House in the Portuguese Riviera from 25 Modern Homes That Kill it With Concrete