The Eiserne Haus (Iron House) is a building in the Lend district of Graz, Austria.

The bridge over the river Mur at Murplatz (present-day Südtirolerplatz) was for centuries the only crossing point in the city.

Buildings near the bridge, damaged by the flood, were subsequently demolished.

[1] Josef Benedict Withalm [de], a master builder and manufacturer in Graz, was interested in new construction methods, and recognised the importance of the location of the site on Murplatz, near the main bridge in Graz leading to the city centre.

[1][2] In 2003 the building, which has protected status, was restored to its original state, and was linked to Kunsthaus Graz, a cultural centre.