Skyscraper sinks into the ground

A skyscraper in the US city of San Francisco sinks slowly into the ground.

Two satellites of the European Space Agency, specially designed to measure subsidence, have analyzed the tower.

The Millennium Tower is almost 200 meters high. The last time begins to tilt the building. Residents of the city comparing the structure all with the tower of Pisa. San Francisco has a couple of weeks ago filed a lawsuit against the developers.