Siglistorf is a municipality in the Swiss canton that is situated by the lower course of what river?
Aargau The canton of Aargau (German "Kanton"    ; sometimes anglicized Argovia; see also other names) is one of the more northerly cantons of Switzerland. It is situated by the lower course of the Aare, which is why the canton is called Aar-gau (meaning "Aare province"). It is one of the most densely populated regions of Switzerland.
Illsee Illsee is a natural lake used as a reservoir above Sierre, in the Valais, Switzerland. Its surface area is 0.21 km2 .