[1] The estate was purchased by Irish MP Henry Bruen in 1775 and was substantially remodelled to its current form by the architect William Vitruvius Morrison in 1832.

[2] It remained in the family until 1957, being inhabited by Bruen's son and grandson, both MPs of the Parliament of the United Kingdom of Great Britain and Ireland.

[3] In 1960 the property was sold to the state via the Irish Land Commission, and it ultimately became the headquarters of Teagasc in the 21st century.

[13] The admission-free park, which features 4 kilometres (2.5 mi) of nature trails, won a Royal Dublin Society Irish Forestry Award in 2013.

[14][15] Oak Park also hosts a 590-acre (239 ha) "national centre for tillage and bio-energy crops research", operated by Teagasc.