The last postcard in this series is a photo of the Château de Chillon, built on a promontory extending into Lake Geneva, Switzerland. It is much larger than it appears from the angle of the photo, as most of it extends back from the current point of view.
There is no description on the back except for the printing company, noted above. This is marked as 1495 in the series. It is not the date of the castle, which has existed at least since the 12th century.