Imagine how long it would take to dismantle a length of iron railings with your bare hands?
Or take down a wall of granite blocks with only a screwdriver?
Cobblestones are reasonably easy to get up but what about doing just this for days and nights on end and the only tool you have is a broken tablespoon.
Windows of any size are always simple to break but collecting all that broken glass with no gloves and bare feet is not a job that anyone would undertake unless forced to at gunpoint.