A high point along the
Rhine river with a
rapids section about from
Säckingen Abbey was chosen as a place for a strategic bridge over the river. The
Kastvogtei (a
feudal land holder appointed by the Abbey) transferred his loyalty to the
Habsburgs in 1173. Laufenburg is first mentioned in 1207 as
Loufenberc. In this 1207 document, the rights of the Abbey to parts of the village were secured while the castles on both sides of the Rhine were given over to the
Kastvogt. This allowed
Rudolf II of Habsburg to expand the site to the city. He is considered the founder of the city. After his death in 1232, the family split into the dominant line of Habsburg-Austria and the younger line of
Habsburg-Laufenburg. The last representative of the Habsburg-Laufenburg line, Hans IV (1408) sold control of Laupenburg to
Leopold III in 1386. It became part of the
Further Austria and one of the four Habsburg
Forest Cities on the Rhine. During the schism at the
Council of Constance in 1415 the
Antipope John XXIII fled to Laufenburg and withdrew his resignation. After the
Swiss conquest of the nearby Aargau, which was triggered by the schism, Laufenburg was the starting point of several campaigns against the Confederates. In retaliation,
Bern,
Solothurn and
Basel besieged Laufenburg during the
Old Zurich War in 1443. During the 15th Century, it was offered as
collateral for a loan from
Burgundy. As a result, it was briefly under Burgundy's control. During the
Thirty Years War it was occupied for 13 years. In 1792 it was the base for the
French Revolutionary Army. With the Lunéville peace of 1801 part of the
Fricktal went to France and the rest went to the
Helvetic Republic in 1802. The Rhine River was chosen as the border between the districts. The complicated division of community property took until 1829 to finish. Most of the city's facilities such as city hall, the market, the grain and salt house and two thirds of the population lived in the Swiss portion. While two-thirds of the territory, most of the commercial buildings, the common forest and the
commons were in the German town. ==Geography==