Why do the Houses Stand

Why do the houses stand
When they that built them are gone;
When remaineth even of one
That lived there and loved and planned
Not a face, not an eye, not a hand,
Only here and there a bone?
Why do the houses stand
When they who built them are gone?
Oft in the moonlighted land
When the day is overblown,
With happy memorial moan
Sweet ghosts in a loving band
Roam through the houses that stand–
For the builders are not gone.