Map - Lenzburg

Lenzburg is a town in the central region of the Swiss canton Aargau and is the capital of the Lenzburg District. The town, founded in the Middle Ages, lies in the Seetal valley, about 3 kilometres south of the Aare river. Lenzburg and the neighbouring municipalities of Niederlenz and Staufen have grown together in an agglomeration.

A Neolithic grave field of the Cortaillod culture has been discovered on the Goffersberg (close to the Lenzburg Castle) dating from 4300 - 3500 BCE. A Roman theater was uncovered when a motorway was built in 1964. It was part of a small settlement with 500 inhabitants that existed for approximately 200 years. The settlement was abandoned in the 3rd century. In the 5th and 6th centuries, an Alamanni settlement existed. Lenzburg is first mentioned in 924 as de Lencis.

In 1036, Lenzburg Castle was used for the first time as seat for the Count of Lenzburg, then an important lord. The house however died out in 1173, and the castle was then transferred to emperor Frederick Barbarossa. In the following period, it was mainly used by the Kyburger house. The Habsburgs took over the castle in 1273. City rights were granted in 1306.

Lenzburg was conquered by Bern in 1415, along with the western part of current Aargau, though Bern did not take away its city rights. In 1433, the city of Bern bought the castle and used it to govern the region from 1444 to 1798. A major fire devastated the town in 1491, sparing only fifteen houses. The Reformation was carried out simultaneously with the rest of the region in 1528, and the economy started to transform slowly from an agrarian to a more industrial one in the 16th century. In the 18th century Lenzburg developed into a centre for cotton trade and processing. An Indienne textile factory was founded in 1732.

In 1798, the Helvetian Republic was proclaimed and the lords from Bern were ousted. The canton of Aargau was founded and Lenzburg became a district capital in 1803.

In 1830, a series of meetings were held in Lenzberg to discuss changing the cantonal constitution. When peaceful negotiation with the cantonal authorities in Aarau failed to produce results, Johann Heinrich Fischer from Merenschwand called for a rebel militia from the Freiämter to force the government to change, in what was known as the Freiämtersturm. On 6 December 1830, his rebel troops marched toward Lenzberg on their way to Aarau. At Lenzberg, about 100 government soldiers formed to resist the militia, and brought their guns in position. The Freiämter militia ran toward the militia with wild battle cries, and the government soldiers broke and ran without firing a shot. By 6pm the militia entered Aarau and the commander of government troops surrendered without any resistance. Lenzburg transformed into the economic centre of the region in the second half of the 19th century. On 23 June 1874, Lenzburg was connected to the Aargauische Südbahn railway. On 6 September 1877 the Schweizerische Nationalbahn opened a line from Wettingen to Zofingen as part of a plan to connect Singen, Germany and Lake Geneva in competition with the established railway companies. The line went bankrupt in 1878 and was taken over by the Schweizerische Nordostbahn. The bankruptcy of the Nationalbahn brought Lenzburg to the brink of economic ruin, as the city itself was heavily involved in financing it. Paying back the city's debt took half a century.

The castle changed hands several times in the 19th and 20th century. In 1860, it was bought by Frank Wedekind, a poet from Germany. In 1893, it was purchased by Americans and renovated. Finally, in 1956, it was bought by the canton and since been used to house a museum.