The site includes several notable buildings and structures including
Oak Park House. What was originally an extensive Georgian house dating from around 1760 was remodelled in 1832 to become a five-bay, two-storey house. The redesign was led by William Vitruvius Morrison and
Richard Morrison. A granite ionic triumphal arch was also constructed to their design. The house was later extensively restored following a fire by architect William Mansfield Mitchell in 1902. Other structures on the estate include: • A
mausoleum (built c. 1841; now ruined), designed by
John B. Keane in a
Greek Revival style • Oakpark
Graveyard (c. 1700–1750), with remains of a church built c. 1725 • A two-storey
stable complex (built c. 1750–1780), renovated in 1985 • A single-arch cast-iron bridge (built c. 1815), designed by
George Papworth ==Other facilities==