The Open Block home in Porto, Portugal strives to function as a block form that allows a natural flow of light and shadow to integrate peacefully into its core. Beauty and comfort transcends throughout this home designed by ARQX Arquitectos with its opaque planes to the North and translucent planes to the West and East. The first floor steeps below the elevation of the street and includes a small multi-purpose room, toilet, laundry room, bedroom, bathroom and a garage. Each room provides an interaction with the outside world with large glass that allows direct light to pour in.