This one has been floating around the ‘net for a bit now, but it’s worth a look.
I’ve been to the Taipei 101 and seen this thing and it is impressive. A massive counterweight that helps stabilize the building. Still, when you look at those cables (bigger around than a person) and those massive shock-absorbing legs that it rests on, it’s hard to imagine that it could move at all – but move it does.
This video was captured by a tourist who was in the Taipei 101 when the big China earthquake happened some 1,100 miles away.