In this episode, we'll focus on an often-overlooked side of Switzerland — Luzern, Bern, Zurich, and Lausanne. Enjoying the country's urban charms, we'll get some exercise, from ringing a very big bell to doing a little river rafting — without the raft. We'll also enjoy a variety of eye-opening art, from Chagall and Klee to pieces created by inmates of an asylum. Then we'll ponder a few Swiss innovations, from their open-minded drug policies to their hush-hush underground arsenals. And it's all before a backdrop of Switzerland's stunning natural beauty.