Structural and spatial concepts; three projects - introduction; glass skyscraper; concrete office building; brick country house; two seminal buildings - introduction; Barcelona Pavilion; Tugendhat House; projects 1931-8 - introduction; court houses; Resor House; Brussels Pavilion; structural and special concepts - summary; three building types - introduction; high-rise skeleton frame buildings - introduction; office buildings; apartment buildings; three skin solutions; scale; 860 Lake Shore Drive apartments; Commonwealth Promenade Apartments; Colonnade Apartments; Seagram Building; Toronto Dominion Bank Tower; US Courthouse and Federal Office Building; low-rise skeleton frame buildings - introduction; Metallurgical and Chemical Engineering Building at IIT; the Commons at IIT; library and administration building; clear span buildings - introduction; Farnsworth House; Crown Hall at IIT; National Theatre, Mannheim; New National Gallery, Berlin; Convention Hall; structure, materials and detailing; three building types - summary; urban spaces; Illinois Institute of Technology - a campus in the city; 860 Lake Shore Apartments; Lafayette Park; Seagram Building; Home Federal Savings and Loan Association of Des Moines; Chicago Federal Center; Toronto-Dominion Center; Westmount Square; a new city square and office tower in the city of London; Plaza detailing; landscaping; urban spaces - summary; education of architects.