Located on the top of One Rincon Hill in San Francisco, this liquid tuned mass damper is “an enormous storage tank and it’s full of water – at maximum capacity, approximately 100,000 gallons of the stuff.” Video after the break.

well, one rincon hill’s water tank is a different technology designed to battle a similar problem. as the tower sways one way, the water in the tank naturally moves in the opposite direction, the force helping to dampen the building�s movement. hence the name.