Musée du château de Herrenhausen

We guarantee the lowest price on all 200,000+ experiences we sell. If you find the same product cheaper within three days of booking or while you're in your destination, we'll refund the difference.

It's Easy To Do

• Gather your information

  Assemble your Viator Booking Number or Itinerary Reference Number and the proof of the lower price you found.

• Send it to us

  Email priceguarantee@viator.com with the documents, your name, and your home address.

• We'll review

  We'll examine your materials and get in touch as soon as we can.

• Receive your refund

  If everything checks out, we'll refund you the difference between the two prices.

Refund Terms & Conditions