French houses tend to be older with thatched roofs, flat roofs, and cellars, while American houses have shingled roofs and no cellars. Bathrooms in French houses combine the shower, vanity and bidet in one room while separating the toilet in another smaller room, unlike American single-room bathrooms. French residents also commonly live in apartments instead of houses, accessing buildings with codes instead of keys and having smaller room sizes than American apartments. House sizes vary between countries, with big French cities having large homes and small cities smaller homes, unlike America where big cities have smaller homes.