On our way home from this summer's trip we will have an overnight layover in Zurich. We are staying at the Hilton at the airport (points being used, so that is not changeable). We should arrive in Zurich in mid-afternoon on a Sunday. Our flight for the States departs mid-morning on Monday.
This is not our first trip to Switzerland, but we have never spent time in Zurich. What would you do with just an evening? I like to hear other people's experiences and preferences as I try to narrow it down.
We like everything - art, museums, nature, walking, etc. There are food allergies (gluten), so food stops are generally not on the top of our list.
Thanks in advance.