My reseach aims to elucidate the circumstances and significance of the reconstruction of castle towers in the period preceding the Second World War. This paper covers the reconstruction of two castle towers on ruins dating from the early-modern period. The early-modern castles at Hachiman and Ueno had no castle towers. The reconstructed castle towers built on their ruins were constructed of wood, and great care was given to the design of their layout and their external appearance. In both cases the impressive spectacle presented by the reconstruction built using modern construction techniques was accepted by the local communities.