Buy or pick up pre-booked tickets at the Hohenschwangau ticket center (open from ~8:00am in summer); buses and shuttles to the castle run from early morning.
Guided interior tour of the fairytale castle and a short walk to Marienbrücke for classic panorama photos — tours typically start around 9:00am and the castle is open 9:00am–6:00pm in summer (times can vary).
Stroll the 14th-century Chapel Bridge, explore Lucerne’s cobbled streets and painted façades — a compact first afternoon walk that requires minimal time.
Take a 1–1.5 hour summer boat cruise — many services run until about 6:00pm, so check schedules and book a late-afternoon cruise when possible to enjoy alpine reflections on the water.
Ascend to Harder Kulm viewpoint by funicular for sweeping views over Interlaken and the twin lakes; funicular usually operates 9:00am–6:00pm in summer.
Scenic rail journey via Kleine Scheidegg to Jungfraujoch; expect ~2.5 hours each way and time at the top to see the Ice Palace, Sphinx Terrace, and panoramic views (trains run frequently; purchase tickets in advance).
Approximately 2.5–3 hour drive to Täsch; park in the large Täsch parking garage and take the frequent 12-minute shuttle train to car-free Zermatt (runs ~05:30–00:00).
Ride the cog railway to Gornergrat for exceptional Matterhorn views; trains run frequently in summer (check schedule) and the round trip with time at the top is ~2–3 hours.
Return shuttle from Zermatt to Täsch, then drive through the Rhône valley toward Montreux; expect ~2–3 hours driving from Täsch to Montreux depending on stops.
Walk the lakefront to see Geneva’s iconic Jet d’Eau and visit Parc des Bastions with its giant chessboards and murals; open public spaces with easy access.
Guided visit to the UN European headquarters — tours are usually available on weekdays and need advance booking; typical tour length ~1–1.5 hours and sites are open 9:00am–5:00pm.
Wander cobblestone streets, climb St. Pierre Cathedral tower for city views, and visit small museums and boutiques; many sites are open from mid-morning.
Allow time to return rental car (if applicable), finish packing, or head to Geneva Airport or train station for onward travel; aim to arrive 2–3 hours before international departures.