Marlay Park is approximately 121 hectares (300 acres) of suburban Public Park located in Rathfarnham in Dún Laoghaire–Rathdown, Ireland. Lying about nine kilometres (5.5 miles) from Dublin city centre and at the foothills of Dublin Mountains, the parkland fed by the little Dargle River consists of mature woodland, extensive informal lawns, acres of recreational land laid out for playing pitches and passive recreation, ponds and walkways.
Marlay House, built in 1794 by David La Touche replaced an earlier 17th century house called the Grange. Of particular interest in the house are the stunning ballroom, the unusual oval music room, and the elegant decorative plasterwork. Marlay House has been restored for guided tours and the former stables have been converted into a crafts courtyard.