Frankfurt Altstadt, about 1903. The Altstadt was the area around the Dom
(Cathedral) and the Römerplatz; it was completely leveled by Allied bombing
in World War II. A portion of the Altstadt was reconstructed in
2012-2018; see this Wikipedia
for details. And click here
to watch a
44-minute video (in German) on the construction of die Neue Altstadt from HR
Fernhsehen / Hessischer Rundfunk.