The expansion of reconsidered buildings is a valid possibility, whether the compositional principle is matching or counterpointing. Thanks to the rationalism that appeared with Romanticism, the buildings built since then are still liveable, and keeping them may well serve the city dweller’s identity, the harmony of the environment. A structure can be reconsidered even in the case of historic buildings—and the curbing of creativity may well be an option. In Halls IV and V we consequently present contemporary examples of the many ways in which buildings can be reconsidered.