 Some other proponents of skyscrapers likened them to medieval cathedrals, symbols of the modern age.Poems depicted skyscrapers as objects of sublime, rational beauty, Ferris describing them as "buildings like crystals, walls of translucent glass, sheer glass blocks sheathing a steel grill".At Chicago's Century of Progress exposition in 1933, skyscrapers and technology were portrayed as a solution for America's current and future problems.