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The detached, accessible large sculpture stems from the US-American Richard Serra, an important still living sculptor. It consists of four trapezoidal leaning into each other sheets made of untreated weatherproof steel.

Originally, the plastic was constructed for the Documenta 6 in Kassel in 1977, where the sculpture stood in front of the central museum's building as 'landmark'.
In 1979, the city of Bochum purchased the artwork for DM 350.00. The then CDU leading politician Kurt Biedenkopf protested against that vigorously. Again and again, there were discussions about the sense and purpose of this 'public lavatory' or just as 'rubbish' titled sculpture.

Despite all the critic, the 12m high and around 100 tons heavy steel-plastic, has an estimated worth of 15 to 18 million EUR by now and still stands at the crossing Wittener Straße/Ostring/Kurt-Schumacher-Platz in front of the main railway station. After laborious cleaning and putting on a transparent protective coat against Graffiti, the 'Terminal' sculpture was unveiled again in a ceremony by the President of the Bundestag Lammert in October 2014.