This is the tower of the Commerzabank in Frankfurt at night. The tower used to be the highest building Skyscraper in Europe when it was build in 1997. It is 300 meters high.
At nine different levels, the atrium opens up to one of the three sides, forming large sky gardens. These open areas allow more natural light in the building, reducing the need for artificial lighting. At the same time it ensures offices in the building's two other sides have a view of either the city or the garden. (--> wiki)