The arboretum features lakes, monuments, follies, a small chapel and approximately 22,000 mature and rare trees.

The Windle Brook runs through the arboretum and has seven main footbridges and approximately ten ponds on each side, some of which are more properly identifiable as lakes based on size.

The land and lakes, including a scattered number of buildings altogether consist of just over 1 square kilometre (0.39 sq mi).

The arboretum, which is also a fresh water park, is located in the south of the civil parish of Windlesham, where alluvial soils juxtapose, furthest from the brook, with acidic, naturally wet, heath.

By the end of the first decade of the 21st century, the arboretum contained in excess of 3,500 species of tree, including an extensive collection of Eucalyptus plants.