The gardens around the house provide a peaceful and attractive setting for the pele tower. There are three short walks in the grounds and nearby woodland that allow visitors to see some of the interesting trees and shrubs in the grounds, which include tulip trees, walnuts, and a Gingko biloba. Of the many shrubs, it is the umbrella-shaped cockspur thorn by the car park that gets the most attention. This is a North American hawthorn with branches growing sideways and thorns about two inches long.
The Woodland Walk will take you through beech woods to a secluded spring. Water is pumped from the spring to a tank in the tower, and thence to the house.
Sharp-eyed visitors may be lucky enough to catch sight of one of the red squirrels living in the grounds and woodland around Preston. Northumberland is one of the last strongholds of the red squirrels, which have been driven out elsewhere by their larger cousins, the grey squirrels.