Bielersee Akte Ligerz
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. 

 

This offer is currently unavailable.

Discover our winter offers.

Winter excursions

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 3 April to 30 June, 1 to 31 August, and 1 to 4 October 2026

Offer valid from 1 to 31 July 2026

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

Offer valid from 1 to 30 September 2026

  • 30% discount on the puzzle trail

   
* 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.

Availability Available on 03.04.2026

Offer valid from 3 April to 4 October 2026


Subject to change without prior notice. Please consult the online timetable.

How to get there

Travel comfortably by train to Biel/Bienne.

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