Melissa Lafsky writes, "After a massive 9.5 earthquake hit the country in 1960 (the strongest ever recorded), the Chilean government developed a seismic design code for all new buildings, shown in the image above. According to AIR Worldwide, the country's building codes were revised again in 1993 to include significant advances over previous versions. And they were wise to do so, given the frequency with which Chile experiences quakes: the country gets hit with a magnitude 7 or higher quake at least once every five years, meaning that the earthquake awareness, both in engineering and building codes, is superior."