The Institution’s History Group has made two study visits to Paris, one in the summer of 1986 and one last summer. To record all the structures visited, the archives inspected, and the lectures given for us, would take many pages. However, as a foil to the Group’s current exhibition at the RIBA Heinz Gallery on the impact of structural iron on architecture in Britain, it may be interesting to look at iron in the same context in France during the same period, essentially in relation to what we saw. Nearly all the iron structures which we studied in Paris-mostly buildings rather than bridges-date from the same period as those in the exhibition, i.e. 1780-1880.