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| Basic Facts (at the time of July 31, 1989) 
 Total border lenght around West  Berlin: 96 mi / 155 km
 
 Border between East and West Berlin: 27 mi / 43.1 km
 
 Border between West Berlin and East Germany: 69 mi / 111.9 km
 
 Border through residential areas in Berlin: 23 mi / 37 km
 
 Concrete segment wall: 3.6m (11.81 ft.) high, 66 mi / 106 km
 
 Wire mesh fencing: 41 mi / 66.5 km
 
 Anti-vehicle trenches: 65 mi / 105.5 km
 
 Contact or signal fence: 79 mi / 127.5 km
 
 Column track: 6-7 m (7.33 yd) wide, 77 mi / 124.3 km
 
 Number of watch towers: 302
 
 Number of bunkers: 20
 
 Persons killed on the Berlin Wall: 192
 
 Persons injured by shooting: ca. 200
 
 Bibliogaphy:
 The Wall, Press and Information Office of Land Berlin 2000/2001
 Bilanz der Todesopfer, Checkpoint Charlie Museum, 1999
 Die Berliner Mauer, Flemming/Koch, 1999
 Die Grenze, Lapp/Ritter,1999
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