Drooling over a staircase designed by Piero Portaluppi and photographed by Lorenzo Pennati. Incredible. #interiordesign #interiors #design #designinspo #designinspiration #interiorinspo #interiordesigner #housebeautiful #pursuepretty #interiorinspiration #interiordesignideas #designdetails #fredericmagazine #pieroportaluppi #lorenzopennati #staircase #staircasedesign