You're bound to head for the coast at some point, but it's worth exploring the hidden bits of inland Cornwall, if only for some respite from the summer beach crowds. The old town of Lostwithiel, for example, is only a 15-minute drive, now famed for its antique shops but with plenty of reminders of its illustrious past, from the medieval bridge over the River Fowey to the extraordinary circular ruins of Restormel Castle (01208 872687).
For beaches, the seaside towns of Looe and Polperro — around a 20-minute drive to either — are the big local draws, but they will get busy. It's a more interesting day out to drive the ten minutes to the Bodinnick Ferry (01726 870232) which will take you over to the lovely estuary town of Fowey, where you can mess about on the river, take a boat ride, eat locally caught seafood, check out the shops or just watch the boats go by. You can also use the ferry for the circular four-mile Hall Walk (details on the ferry website), which canters up and down around the Fowey estuary for some scintillating views.
Other big-ticket attractions are all well within an hour's drive of the farm — Newquay, if you fancy some surfing and hi-jinks, or the rather less frenetic gardens and biomes of the Eden Project (01726 811972), which is only half an hour away, past Lostwithiel. That's a big day out in its own right, but if it inspires you, you'll want to allow another day to see The Lost Gardens of Heligan (01726 845100), a 40-minute drive, where Europe's largest garden restoration project has an amazing array of trails and landscapes, from ancient woodland to tropical jungle.