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.
Zürcher Oberland The Zürcher Oberland ("Zurich highlands") in Switzerland, is the hilly south-eastern part of the canton of Zurich, bordering on the Toggenburg, including the districts of Uster, Hinwil, Pfäffikon as well as the Töss Valley as far as the district of Winterthur. The territory gradually fell under the control of the city of Zurich from 1408 to 1452. In the 18th century, the jurisdiction lay with the reeve of Grüningen for the southern part, and with the reeve of Kyburg for the northern part together with most of the Zürcher Unterland.