Day 3: Drive through Black Forest, visit to Lake Titisee - Cuckoo Clocks OR optional Jungfraujoch Excursion, cogwheel train trip via Kleine Scheidegg Ice Palace, Sphinx terrace.
Interlaken City Tour. Overnight in Engelberg.
Day 4: Engelberg - Berne - Gruyeres - Geneva - Drive to Berne - city tour includes Clock Tower, Kramgasse, & St. Vincent Cathedral. Drive to Gruyeres, the Vaud Riviera and reach Geneva. Overnight in Geneva.
Day 5: Geneva - Montreux - Zermatt - Geneva city tour parks, old town, town-hall & the European seat of the United Nations. Drive to Lausanne & Montreux, pass by Chillon Castle, proceed through the Valais. Arrive Zermatt. Overnight in Zermatt.