FAAB Architektura have designed a conceptual eco-building for Saudi Arabia aimed at changing the environment around it. The Vertical Oasis Building would feature 59 above- and below-ground levels spread across a height of 220m (722ft). A mixed-use programme would include retail, office, hotel and residential spaces, as well as a 712sq m (7,700sq ft) rooftop park. The main feature of the tower's design, though, is a permeable façade broken up