My dad and his wife are coming into town so we are meeting in Lancaster for the afternoon of 9/7/2017.

I need advice on what to do and where to eat. My dad is a recovered alcoholic so no breweries or distillery recommendations please.

We'll be there between 2PM and 8PM. 4 adults, no kids, museums or hiking trails good! Weather Underground has chance of precipitation at 0 percent.

Thanks in advance.