Special offers

Explore'n'Rail The Ligerz File: The Golden Key

Cheaper into the puzzle adventure at Lake Biel

Everything has changed since the last vintners’ fair. The Golden Key of Ligerz has vanished without trace. Now your detective’s instinct is called for! Immerse yourself in an adventure-packed story and solve tricky puzzles. On foot, by boat and the «vinifuni» funicular railway, you will go in search of the missing golden key. The hunt for clues will lead you through the unique landscape by Lake Biel/Bienne and take you to Ligerz and Prêles.

You can take advantage of a reduction on the leisure activity if you travel there and back by public transport. Travel to Biel/Bienne quickly and in comfort with BLS.

10% discount on the puzzle trail

Benefit from the following price advantage if you buy the outward and return journey by public transport at the same time:

10% discount on the puzzle trail

Purchase

Highlights

Picturesque landscape around Lake Biel
Exciting search for clues on foot, by boat and with the funicular
Puzzle adventure for the whole family

Savings offer

You can benefit from the discount when you travel there and back by public transport using any ticket or travelcard, e.g. a standard public transport ticket, a Day Pass, a supersaver ticket, a Regional Travelcard, a Half Fare Travelcard or a GA Travelcard.

Savings offer

10% discount on the puzzle trail
offer valid on travel dates from 12 to 30 April, 1 to 30 June and from 1 August to 5 October 2025

Offer valid from 1 to 31 May 2025

30% discount on the puzzle trail

Offer valid from 1 to 31 July 2025

10% discount on the puzzle trail
up to 50% discount on the journey to Biel/Bienne and back*

* Please note: The number of discounted tickets for public transport is limited each month. Once the 50% discount has been used up, the discount is reduced to 30%. Once the tickets with 30% have been used up, the price reduction is cancelled. The discounted public transport tickets are only available when booking online.

Offer

Puzzle round trip:
- Trip by boat from Biel/Bienne to Ligerz (approx. 1 hour)
- «vinifuni» cable car from Ligerz to Prêles
- Individual return journey from Prêles or Biel/Bienne
- Total journey time: 3 to 4 hours, only short distances on foot
The start documents (file) are subject to a charge and can be obtained upon presentation of your ticket at the SBB counter in Biel/Bienne, at the boat landing stage of Bielersee Schifffahrt or in the travel centres of Aare Seeland mobil.
You will need a writing implement and a smartphone with Internet access.