The U 4 line divides the Park into an Eastern and a western section. The engineers used the entire width of the park for the conditioning of the Baross, who is here with his glazed sides open to the Park and is one of the most beautiful Metro stations in the city. The Metro runs underground to the trough of the Park and occurs in the Park to the surface that is build around the train station, to dive on the other station and Park side again under the Earth. Despite the open position the station not on the ground, so by the two sides of the Park is accessible, but must be committed as any Metro station from above stairs. This "top" or the roof of the station forms the historical "Carl bridge of Zuckmayer" with stone figures and vases on an ornate parapet by the wide stairs in the two parts of the Park lead down. The bridge connects the northern and southern part of Innsbruck road through the Park lowlands away, however is closed to through traffic, and is reserved for pedestrians and cyclists. It is named after the writer Carl Zuckmayer, who became dramaturg at the Deutsches Theater in Berlin in 1924 with Bertolt Brecht.<br>The bridge and Metro station underwent a lengthy and costly renovation, which was complicated by the still swampy boggy ground in the years 1995 to 2005. The construction of stairways that the oak piles into the sump below the stairs is rotted and were too short turns out, for example. As a substitute 21 meter long concrete piles were driven deep into the ground. The need for the extensive renovations resulted from a sacking of the area outside the station around sixty centimetres; the "deer fountain" and the "milk houses" in the eastern part of the Park threatened to sink into the ground.