The core of our house is 1000 years old it has lasted because it was made from oak (which over the years has become as hard as steel), bricks, stone and lime. Concrete cracks where as lime bends but we are on particularly unstable ground being in the fens. Where the house has been repaired in the past with concrete the ungiving concrete has ripped the bricks apart. The underground cellar is lime and stone and has lasted 1000 years it has just undulated over the years.