Echo House by Ward Just

Echo House was a real pleasure to read; it dips into the lives of three
generations of a power family in Washington. Because it covers a long
time span (between the wars to the 90s), it visits the characters from
a distance, always with references to the key moments in their lives.
This is not as tight a story as An Unfinished Season, but like that
book, place is very important. “Washington” is a character itself,
loved by some, despised by others. Perhaps it is the central character,
changing over the course of the book, described lovingly and in detail,
having its effect on all the other characters.