Dilapidated

I remember the day I discovered this word, I was 14 years old (with Nigel and Sara which will mean something to certain people) it just seems unreasonable, impossible that someone would willingly do that to a building.

[dih-lap-i-deyt]
1.
to cause or allow (a building, automobile, etc.) to fall into a state of disrepair, as by misuse or neglect (often used passively): The house had been dilapidated by neglect.
2.
Archaic. to squander; waste.
verb (used without object)
3.
to fall into ruin or decay.