Fascinatingly, buildings are always a product of their time.
Detroit's Book Tower, for example, started construction in 1916. This is right around the time that Detroit became the 4th largest city in the US (after New York, Chicago, and Philadelphia). From 1910 to 1920, the city's population grew by about 113% to nearly a million people (more people than the city has today).
Because this was the time, the tower was obviously grand. It totalled almost half a million square feet of office space (483,973 sf to be exact, according to Wikipedia). It had a large 3-story atrium with an ornate glass dome. And up until the 1970s, it seems that it remained a desirable office address on Washington Boulevard.
