The flint tools found here from that era (6000–4500 BC) are clearly defined and known as the Oldesloer Stufe.

For a number of years in the 18th century the Moravian Church had a congregation in Bad Oldesloe.

At that time, the Duchy of Holstein was ruled by the kings of Denmark within the Holy Roman Empire.

On 24 April 1945, the town was heavily bombed by Allied forces in the final days of the Second World War in Germany.

[2] 16th century Mennokate: Memorial for Menno Simons, founder and eponym of the Mennonites, a group of anabaptists.