This past week, the international, flat-pack furniture mega-store chain Ikea installed a fully furnished apartment in the Paris Auber RER underground station. Five “roommates” were recruited to live the underground life Ikea-style for six days while demonstrating the functionality and ingenuity of Ikea’s space-saving design solutions. Unfortunately the underground apartment in the City of Light will be dismantled today. However, Ikea plans to build more pop-up apartments in metros around Europe for the edification of furniture voyeurs.