Pengoon Farm Touring Caravan Site is situated on the B3302 to the North-west of Helston in a rural setting.
This page shows those tourist attractions in the eastern part of Cornwall which are within an hour and a half drive of Helston.
They are probably more suitable for visiting on your journey to or from Pengoon.
Tintagel Castle (English Heritage). Not in the best of conditions, but it is very old.