This is a video showing the movement of the Taipei 101’s tuned mass damper during the recent 6.9-magnitude earthquake that hit the country. The tuned mass damper is a massive 16-foot, 660-metric ton sphere suspended between the 88th and 92nd floors of the building that swings to counteract any movement of the building and reduce vibrations. Vibrations, from what I could gather, are not something you want in a 1,667-foot tall building. Or coming from your car. Sex toys though, absofreakinlutely.
Keep going for this video, as well as one from the 2015 tsunami that moved the damper a full meter.