Interlaken, Thun & Brienz
Interlaken is useful because it is a switchboard; the day becomes better when you choose one lake or one valley instead of treating the gateway as the destination.
Interlaken sits between Lake Thun and Lake Brienz and connects onward to the Jungfrau region. The town itself is convenient but not the strongest reason to spend a whole day. Use it as a base, then decide whether the day belongs to Brienz/Giessbach, Thun/Spiez or the high valleys.
Two to four nights work if Interlaken is the base for several excursions. Stay near Interlaken Ost for Jungfrau/Brienz access or West for Thun-side rail and a more central evening position.
Interlaken Ost and West serve different parts of the corridor. Trains and boats split toward Brienz and Thun; high-mountain journeys use additional operators and should be planned separately.
Lake boats and mountain connections vary by season. Föhn, rain and cloud can make the lakes excellent while high summits are poor, so keep a low-elevation day ready.
Do not make every rail line, lake and summit compete for the same day.
Each guide below has its own access contract, choice set, four-stage route, fallback and current-source check.
Interlaken Base & Harder Kulm
Use Interlaken to organize rail, lake and valley departures, then give the town only the time it earns: a compact walk, logistics reset and optionally Harder Kulm in clear weather.
Open the field guide →
Lake Brienz, Brienz & Giessbach
Choose a boat–rail combination around Lake Brienz, using Brienz or Giessbach as the one main stop and protecting the return rather than trying to hop every pier.
Open the field guide →
Lake Thun, Thun & Spiez
Use the western lake for a town-and-castle day, choosing Thun’s urban old town or Spiez’s compact bay as the main anchor and connecting by rail or boat.
Open the field guide →Three different reasons to leave the hotel.
Interlaken Base & Harder Kulm
The town is convenient, flat and easy for recovery, but it should not displace a stronger lake or valley day. Harder Kulm adds an overhead view when clear, not an automatic must-do.
Two to four hours is enough for the town itself; Harder Kulm can extend the block. The real value is simplifying multiple excursion days.02Lake Brienz, Brienz & Giessbach
The lake gives a calmer, lower-elevation day than the Jungfrau peaks. Boat travel consumes time but is the point; train travel is faster and better when you want more time in Brienz or at the falls.
Allow a full half day for Brienz or Giessbach; a boat-plus-stop circuit can use most of a day.03Lake Thun, Thun & Spiez
Thun offers more urban depth and a larger old-town walk; Spiez offers a smaller bay-and-castle setting. Doing both is realistic, but one should remain the main stop.
Half a day for one town, most of a day for Thun plus Spiez with a boat or long meal.Interlaken, Thun & Brienz FAQ
How long should I give Interlaken, Thun & Brienz?
Two to four nights work if Interlaken is the base for several excursions. Stay near Interlaken Ost for Jungfrau/Brienz access or West for Thun-side rail and a more central evening position.
What transport decision matters most around Interlaken, Thun & Brienz?
Interlaken Ost and West serve different parts of the corridor. Trains and boats split toward Brienz and Thun; high-mountain journeys use additional operators and should be planned separately.
What should I do if mountain, lake or weather conditions change?
Use Thun, Spiez, Brienz or a lake boat when high mountains are hidden. A flexible base earns its cost only when you are willing to swap days by weather.
Official sources and photo credits
Planning facts and image licensing were reviewed on 12 September 2026. Recheck transport, trail, lift, boat, weather and attraction status before travel.
- Interlaken Tourism.
- BLS Lake Thun & Lake Brienz navigation.
- SBB rail planning.
- Jungfrau Railways.
- View of Interlaken and Lake Brienz from Harder Kulm (Ank Kumar) 02.jpg — Ank Kumar, CC BY-SA 4.0. Resized, display-cropped and converted to WebP; no other material edits.
- 5498 - Brienzersee - Iseltwald looking toward Giessbach & Brienz.JPG — Andrew Bossi, CC BY-SA 2.5. Resized, display-cropped and converted to WebP; no other material edits.
- Blick auf Schloss Spiez und Thunersee.jpg — JoachimKohler-HB, CC BY-SA 4.0. Resized, display-cropped and converted to WebP; no other material edits.