was installed on the roof. In 1979, an emergency exit stair tower was added on the Rhine side of the building after plans of Eiermann's student, Georg Pollich. Name The building's name, "Langer Eugen" ("Tall Eugene") is an ironic reference to the short stature of Eugen Gerstenmaier (the implied "Short Eugene"), who was President of the Bundestag when the tower was built, and was the driving force behind its construction. Post-Bundestag era — UN Campus After the Bundestag moved back to the Reichstag building in Berlin in the summer of 1999, Langer Eugen was next used by the Federal Institute for Vocational Education (Bundesinstitut für Berufsbildung) and various other national and international educational institutions. On May 28, 2003, the federal government decided to turn the building over the United Nations for permanent use. The required renovations were handled by the North Rhine-Westphalia state construction company and cost an estimated €54 million. The renovations made few substantial alterations in order to preserve Eiermann's architecture as much as possible. On March 31, 2006, ownership of the property was transferred to the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety. With the exception of the largest office, the United Nations Framework Convention on Climate Change secretariat, all the Bonn-based UN offices were moved into the building in April 2006 (though part of the growing Climate Secretariat moved into the building in July 2010). At the beginning of May, three large, lighted UN-emblems were added to the roof, though for technical reasons, one could not be placed on the Rhine-facing side. Also as part of the security preparations for UN occupancy, a 700-meter fence was built encircling the UN campus and an adjacent road was closed to traffic. On July 11, 2006, then Secretary-General dedicated the UN Campus. After the renovations, there is room for approximately 675 employees in the building, though some floors remain empty for future UN institutions to occupy. With the occupancy of the UN, the area became an extraterritorial jurisdiction, similar to an embassy or consulate. Architecture and design According to the specifications, the building is 115 meters high, distributed over 30 stories, with an additional three basement levels. At the time of its use by the Bundestag, floors 3-17 each accommodated 30 offices for the 446 representatives. Floors 19-28 housed the various committee offices as well as conference rooms. Technical facilities were located on floors 18