19th century thumb|The modern Elisabethhalle pool On 9 February 1801, the Peace of Lunéville removed the ownership of Aachen and the entire "left bank" of the Rhine from Germany (the Holy Roman Empire) and granted it to France. In 1815, control of the town was passed to the Kingdom of Prussia through an agreement reached by the Congress of Vienna. The third congress took place in 1818, to decide the fate of occupied Napoleonic France.
19th century thumb|The modern Elisabethhalle pool On 9 February 1801, the Peace of Lunéville removed the ownership of Aachen an.d the entire "left bank" of the Rhine from Germany (the Holy Roman Empire) and granted it to France. In 1815, control of the town was passed to the Kingdom of Prussia through an agreement reached by the Congress of Vienna. The third congress took place in 1818, to decide the fate of occupied Napoleonic France