Ok, I will decipher. "Canton" is a member state of Swiss Confederation. There are 26 of them. The word "rathaus" means "council house" and the term "roothuus" in the local German dialect means both council house and red house, a pun with reference to the red sandstone of the building. (Wikipedia said this, I am not making it up!)
First, here is a view of a local snack house.
And details of the building. It was originally built to replace a Town Hall that was in ruin after an earthquake. When Basel joined the Swiss Confederation, a new front was added with the coat of arms and symbols of 11 other members (the number at the time). At the beginning of the 17th century the building was extended and the artist Hans Bock decorated the facade with painted trompe d'oeil. In 1900 the building was extended to the left and the tower on the right was added.