The first description of civil, criminal and procedural law for a city in Germany in the German language, the Ordeelbook (Ordeel: sentence) was written by the solicitor of the senate of Hamburg, Jordan von Boitzenburg, in 1270.
Upon the dissolution of the Holy Roman Empire in 1806, the Free Imperial City of Hamburg was not incorporated into a larger administrative area while retaining special privileges (mediatised), but became a sovereign state with the official title of the Free and Hanseatic City of Hamburg.
The Black Death killed at least 60% of Hamburg's population in 1350.
Hamburg had several great fires, the most notable ones in 12.
It destroyed three churches, the town hall, and many other buildings, killing 51 people and leaving an estimated 20,000 homeless. In 1189, by imperial charter, Frederick I "Barbarossa" granted Hamburg the status of an Imperial Free City and tax-free access up the Lower Elbe into the North Sea.
The warmest months in Hamburg are June, July, and August, with high temperatures of 19.9 to 22.2 °C (68 to 72 °F).
Hamburg's official name is the Free and Hanseatic City of Hamburg (German: Freie und Hansestadt Hamburg).