Architectural, construction, and street regulations. The architecture guide was published in 1991 and 1997. Since then, much has changed in the city. Especially the city center and the area around Pragsattel are places of active construction. Around 30 new buildings and projects have been integrated into the third edition. Renovations of older Stuttgart buildings and monuments have also been taken into account. Selection of the new objects: - Stuttgart 21, renovation of the main train station - Zeppelin-Carré (near the main train station) - Gallery of the City of Stuttgart - Bosch area (near the Liederhalle) - Generations House Heslach - Killesberg observation tower - Mercedes-Benz World (near Pragsattel) - Community center and senior living facility St. Antonius (in Zuffenhausen) - Residential building Sobek - Ecology Center of the University of Hohenheim.