are properties that are now known to cause deterioration in facades like terra cotta. In previous designs, the mass of the masonry in walls would absorb moister, therefore these new ideas on thermal cycling were not needed. With more structures evolving from masonry to steel, methods previously depended on would no longer cut it. When considering the need for the restoration of the Mather Tower, its likely, although not specifically stated, that the falling cladding was a result of cracking terra cotta due to high amounts of strain from the structure itself. References External links Page at ChicagoArchitecture.info Chicago Landmarks: Mather Tower Emporis listing Skyscraper hotels in Chicago Residential skyscrapers in Chicago Gothic Revival skyscrapers Office buildings completed in 1928 1928 establishments in Illinois Chicago school architecture in Illinois Chicago Landmarks