Visited Schloss Ettlingen (Castle) and Promenaded along the Alb River

I call this place as a place to see a history and a modern life, a beautiful old city which is located in Karlsruhe, BW-Germany. My destination was actually to see Schloss Ettlingen (the castle) but unfortunately the castle was just closed when I arrived. So we, three of us (me, my husband and kid) decided to walk around in the garden of castle. What I could see from the note program shown in front of the main door of the castle, some part of the building functioned as a museum which present the visitors about the history of the city and the collection of local art, and the other part of building used for some other activities organized by the castle. This Barockschloss (Baroque castle) is known as well as schlossgarten (castle garden) as this castle is rich with some different type of gardens such as : garden of roses, lavender, herbal garden, and some others which I forget the names.