1. The central donjon, or tenshu, burned in the 1657 Meireki fire.

2. In 1980, the Imabari City government constructed the new donjon tower in the castle.

3. However, many Medieval castles shared similar features – defensive Barbicans and deep moats, with a kitchen and a great hall; and a Keep (or donjon) at their heart

4. When the visitor has mounted the Crumbling steps of this ancient donjon, he reaches a little plateau where, in the seventeenth century, Georges Philibert de Sequigny, Lord of the Glandier, Maisons-Neuves and other places, built the existing town in an abominably rococo style of architecture.