A century ago Galveston Texas was leveled by a storm , when they rebuilt they didn't just build a better sea wall, they dumped so much fill inside the wall that they made that sort of flooding unlikely for the next century.
In spite of that Galveston never regained its importance as the main port in the region.
I wonder if there are any examples of citys shrinking gracefully and beneficially?
Growth is hard to manage , but nobody wants shrinkage so shrinkage winds up not being managed at all.