Especially the shots with the nice bridge would benefit from less depth of field, so that the eye is guided toward the bridge and out-of-focus areas provide a nice dreamy background.
Of course with the 24-105 f4 is the best you can do in this regard, but you can still manipulate things by using either manual focus or using a lower focus point, so that the grass up front is more in focus and the houses and stuff in the background are more out-of-focus.
Of course this recommendation will only work out, if you have a chance to visit the place again. Apart from that I second NightBreath's suggestion.