The CITADEL walks are fantastic!
Yet I want to warn you:
do wear comfortable shoes.....the citadel is an old FORTRESS built on an UNEVEN rocky spur!
So you have to be careful.....especially when you go there with children, which btw they will enjoy tremendously!
Stay well clear of the MOATS and keep to the marked footpaths and everything will go fine!
It is always such a pity when painful or upsetting things happen, isn't it??
So take care........
Don't enter the garden near the railway station (that one to the right of the station when you exit it, which is near a bridge) at night. Everyone warned me about serious danger there at night. Avoid it (anyway, why would you go to the garden at night? There's nothing to see!).