neglected — to pay no attention or too little attention to; disregard or slight: The public neglected his genius for many years.
demolished — to lay waste to; ruin utterly: The fire demolished the area.
destroyed — to reduce (an object) to useless fragments, a useless form, or remains, as by rending, burning, or dissolving; injure beyond repair or renewal; demolish; ruin; annihilate.
disorganized — functioning without adequate order, systemization, or planning; uncoordinated: a woefully disorganized enterprise.
ruined — ruins, the remains of a building, city, etc., that has been destroyed or that is in disrepair or a state of decay: We visited the ruins of ancient Greece.