Before revision: Shake-table crash testing of a regular building model (left) and a base-isolated building model (right) at UCSD Seismic loading Tokyo Skytree, equipped with a tuned mass damper, is the world's tallest tower and is the world's second tallest structure.
After revision: Shake-table crash testing of a regular building model (left) and a base-isolated building model (right) at UCSD Seismic loading Tokyo Skytree, equipped with a tuned mass damper, is the world's tallest tower and is the world's third tallest structure.