I am interested in seeing Fallingwaters. They do have a number of tours, which they advise you book in advance. For Sunday the 9th, the guided house tours have a variety of time slots open (some are sold out) and the Landscape Hike which starts at 9.30, for 1.5hrs also has spots open. They do have grounds passes and advise to call day-of for availability.

https://www.fallingwater.org/visit/t...ngwater-tours/

It is however a 90-minute drive from downtown to Fallingwaters, so keep that in mind for flights and time spent there.

jackal - is it worth the drive, given one will have to leave by ~2.00pm to deal with getting to the airport etc? My flight isn’t until 6.19pm so I have more time than those on the AS flight.

Alternatively, Saturday may be an option too and do some of the other things on Sunday?