The architecture of the 20th century is distinguished by an astonishing diversity. Just as the clash of aesthetic and commercial ambitions nevertheless produced many a happy symbiosis, so the purist and the expressive, the monumental and the picturesque came face to face. From lofty "starchitects" to lesser-known names around the world, this chronological overview takes you to the heart of the ideas, trends, and transitions that defined the 1900s.