Capture the castle. On the banks of the River Tamar, this impressive 17th-century country house topped with an embattled parapet is available for private hire. Its grand rooms, furnished with squashy sofas and antiques, and wooded grounds, designed by Humphry Repton, make a splendid setting for special celebrations, retreats and small weddings, or for renewing vows. A raised terrace has beautiful river views; in the walled garden, a solar-heated outdoor pool.