Viator offers a 10% discount on their day tour from Zurich to the open top cable car to the Stanserhorn. A guided city tour of the old town of Lucerne is included as well. The offer applies to trips made in June 2016.
Please see viator.com/tours/Zuric h/Day-Trip-from-Zurich-to-Lucerne-and-Stanserhorn for details.
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