Walk around in the medieval downtown. Take pictures of the mighty town gates and the baroque city hall.
Don't be shy and go into the "Stadtpfarrkirche" and the "Spitalkirche" (churches). In the last one you will find a painting from the 18 th. century which shows the donor of the "Spital" (hospital).
Between 1180 and 1918 Bavaria was ruled by the "Wittelsbacher". A monument and a church in Oberwittelsbach (part of Aichach) a dedicated to them.
The castle "Wittelsbach" was completely destroyed. Archaeological findings are displayed in the "Wittelsbacher Museum" which is located in one of the town gates.
This museum displays mainly findings from medieval times related to the "Wittelsbacher" and from the first settlements in this region.
You can also learn something about the archaeological work and methods used to recover all these treasures.
Please ask for written information. I hope they are available in the English language.
As far as I remember there was no entrance fee to this museum.
We should have spent more time in Aichach.