By the time a building is abandoned and falls into disrepair, its community is already suffering. Michigan scholars suggest it's time to plan for structures' end of life before they even go up.
We asked five architecture experts to name one building or structure they wish had been preserved, but couldn't resist the tides of decay, development and discrimination.
In the past, demolishing the dictator's residences created a void exploited by Nazi sympathizers.
It's a dangerous job and sometimes things don't go to plan.