Let's recall year 1988 and the Spitak Earthquake which happened that year in Armenia. The point is that the buidings they were constructing during the 'stagnation' era of Leonid Brezhnev were supposed to be quakeproof but in fact support structures of apartments and other buildings were very poor. So when the earthquake happened, at least 25 thousand people died in ruins.
The earthquake hit 40 % of the territory of Armenia, densely populated region with 1 million people. 21 towns and 342 villages were destructed, 514 thousand people were left without shelter, 20 thousand people were injured and 12500 people were hospitalized. Number of victims was about 25 thousand.
Each year on December, 7th, Armenian people remeber those who died in the earthquake.
The city of Spitak was almost completely destroyed.