Ahrensburg

The Ahrensburger Tunneltal is a place of numerous excavations from the Upper Paleolithic culture. The culture is called Ahrensburg culture by archaeologists.

The town dates back to the 13th Century, when the Counts of Schauenburg founded the village of Woldenhorn (which later became the town of Ahrensburg) and the neighbouring villages Ahrensfelde, Meilsdorf and Beimoor. Woldenhorn is first mentioned in the year 1314. The village came into the possession of the Cistercian Reinfeld Abbey in 1327, and Woldenhorn became the seat of the monastery reeve until the middle of the 16th century.

The "Arx Arnsburga", also called Arnesvelde castle, was built around the year 1200. Ruins of the castle are still visible in the Hagen forest to the south of the town. The town coat of arms shows the castle in the upper field. There are records of reeves based in the castle in 1295 and 1304. In 1326, Count John III of Schauenburg had his reeve relocated to Trittau and abandoned the castle.

After the dissolution of the monasteries due to the Reformation, the whole area came into the possession of the king of Denmark. He rewarded his general Daniel Rantzau 1567 with lordship over these villages. His brother and heir Peter Rantzau built the Renaissance Ahrensburg Palace in the form of a water castle, now the symbol of the town, and the castle church around 1595. The construction of almshouses directly by the church was exemplary.

The "Ahrensburg Estate" belonged to the so-called Noble Estates, which possessed a large amount of freedom and self-administration.

The Rantzaus' estate was heavily indebted by the middle of the 18th century and, in 1759, was acquired by the businessman Heinrich Carl von Schimmelmann. Schimmelmann remodelled the castle and village in the baroque style and the current layout of the town reflects these plans.

On the 7 June 1867 the estate village Woldenhorn became an independent Prussian country community and renamed itself Ahrensburg after a decision by the community council. It belonged to the "Amt Ahrensburg", from which the "amtsfreie" community once more seceded in 1912.

The construction of the railway between Hamburg and Lübeck in the year 1865 made Ahrensburg a popular destination for outings outside Hamburg and the number of inhabitants increased. By 1910, the population had reached 2,750. The incorporation of various surrounding communities in the year 1928 led to an increase in the town area to about 5 km².

Building of the settlements "Daheim/Heimgarten" (partially on the territory of the current community of Ammersbek) and "Am Hagen" (originally called "Franz Seldte Settlement") commenced in 1933. The rush of settlers from around Hamburg lead to the creation of the current housing layout.

When Ahrensburg received city rights in 1949, the town had some 17,775 inhabitants – around half of which were refugees from the former eastern German regions.

Erica Keck, who was elected mayor in 1950, became the first female elected mayor in Germany.