Alt-Berlin

{| cellpadding="2" style="float: right; width: 307px; background: #40E0D0; margin-left: 1em; border-spacing: 1px;" ! Coat of Arms ! Map |- style="background: #ffffff;" align="center" | 135px Seal of 1280 | 165px Alt-Berlin within Berlin's city center |- ! colspan=2 | Basic Information |- style="background: #ffffff;" | City: || Berlin |- style="background: #ffffff;" | Borough: || Mitte |- style="background: #ffffff;" | Locality: || Mitte |- style="background: #ffffff;" | Coordinates: || |- style="background: #ffffff;" | Elevation: || 34 m (111 ft) above sea level |} thumb|300px|Neighborhoods in [[Berlin-Mitte: Old Cölln [1] (with Museum Island [1a], Fisher Island [1b]), Alt-Berlin [2] (with Nikolaiviertel [2a]), Friedrichswerder [3], Neukölln am Wasser [4], Dorotheenstadt [5], Friedrichstadt [6], Luisenstadt [7], Stralauer Vorstadt (with Königsstadt) [8], Alexanderplatz Area (Königsstadt and Altberlin) [9], Spandauer Vorstadt [10] (with Scheunenviertel [10a]), Friedrich-Wilhelm-Stadt [11], Oranienburger Vorstadt [12], Rosenthaler Vorstadt [13] ]]

Alt-Berlin ("Old Berlin"), also spelled Altberlin, is a neighborhood (Stadtviertel), situated in the Berliner locality (Ortsteil) of Mitte, part of the homonymous borough. In the 13th century it was the sister town of the old Cölln, located on the northern Spree Island in the Margraviate of Brandenburg. The neighbourhoods (Viertel) of Nikolaiviertel, Marienviertel, Klosterviertel are within Alt-Berlin.