Oct 4, 2015 - 1:24 PM
Are you referring to the Trümmelbach Falls near Lauterbrunnen? If so: they close early November, so you can't visit them during your stay. There are alternatives though, so if you're curious about this region you can certainly make a day trip from Lucerne. I'd advise to make a nice scenic train/cable car trip if weather is good, e.g. to Mürren-Schilthorn or a round trip Lauterbrunnen-Wengen-Kleine Scheidegg (may be up to the Jungfraujoch)-Grindelwald.
Yes, you'll find pretty valleys near Lucerne too, although not many of them offer such a wide range of activities as the Lauterbrunnen valley does. The valley of Engelberg (valley station for the Titlis) is beautiful, and so is the so-called Melchtal. Note that you'll be traveling in low season, so whatever plans you have, it's wise to check schedules and make sure the trains and cable cars you're interested in are running.