Opere durevoli, opere effimere ... venti anni dopo. Durable works, ephemeral works ... twenty years later.

In October 1998 the Modulo magazine published an articlewritten by Giovanni Klaus Koenig entitled DurableWorks, Ephemeral Works in which the Author treated thedelicate relationship that connects architecture with itsconservation. Twenty years later, this article wants totackle three of the questions then posed by the Professoras a corollary of his treatment. The first questionconcerns the relationship between the ‘durable’ and the‘ephemeral’ in architecture. The second question concernsthe ‘two-ways’ approach to architectural criticismthat Cesare Brandi called ‘astanza’ and ‘semiosi’.Finally, the third one concern the question that Koenigidentifies as the ‘restoration of the projects’.