You Can Sit on Your Parks, or Save Them
ONE day in August Charles Birnbaum, a landscape architect and tireless preservationist, walked among the silent fountains and broken pavers of the Nations Bank Park Plaza, which molders alongside the Hillsborough River here like some kind of ruined paradise garden. Designed only 17 years earlier by Dan Kiley, a renowned modernist landscape architect, this grid of grassy squares, water and palms was built to echo the window patterns and proportions of a neighboring tower designed by Harry Wolf. ''It is one of Kiley's greatest works,'' Mr. Birnbaum said, ''and one of the great public modernist landscapes of its time.''

