ENThis article describes technical monuments which have legal status or features of a technical monument. The recording of technical heritage in Lithuania started later than of architectural, urban and art monuments, after a change in approach to the objects of industrial production considering them to be the nation’s property. The late interest may be explained by the fact that during the interwar period there existed a romantic attitude: only those objects made in peasant farms by peasants themselves were valuable to national culture. Before World War II, the interest was taken in water and windmills, but only in the wooden ones, and later in other technical objects. In Northern Lithuania, there were recorded most mills, but speaking about technical heritage, I would like to pay most attention to the greatest technical heritage object in Lithuania – a narrowgauge railway, because the biggest part of it has continued to exist in Northern Lithuania, moreover, together with Ona Stasiukaitienė and Eglė Stulpinienė we have contributed to its existence. [From the publication]