In the fall of 1968, thirteen students and three Yale faculty members embarked on an expedition to Las Vegas—the world capital of vulgarity and bad taste, an architect's nightmare of the time—a time of austere and laconic architectural forms, social ambitions, and the lofty mission of the architectural profession. The results of this modest student research were summarized in the work 'Lessons of Las Vegas.' This book is a new edition of the classic work, which became the main manifesto of postmodernism. 'Lessons of Las Vegas' rehabilitated ugly and mediocre architecture and forever changed notions of the beauty and functionality of urban space.