Powerscourt Estate, Palladian mansion in Enniskerry, Ireland.

Powerscourt Estate is a three-storey Palladian house of light grey ashlar, its severe facade bookended by two circular domed towers. A central portico with columns and a pediment marks the entrance, and a balustrade tops the central section. Richard Cassels remodelled the medieval castle between 1731 and 1741, using the hilltop position to give the house a castle air.

The transformation began in 1731 when Richard Wingfield, first Viscount Powerscourt, hired architect Richard Cassels to rebuild a medieval castle into a Palladian country house. The house suffered a major fire in 1974, was later rebuilt, and now serves as a visitor center.

The estate's Irish name, Eastát Chúirt an Phaoraigh, comes from the La Poer family, an Anglo-Norman lineage whose surname was anglicised to "Power". In the 1830s Theodosia, Dowager Viscountess Powerscourt, hosted conferences on unfulfilled Bible prophecies at the house, attended by John Nelson Darby and Edward Irving; her letters and papers were republished in 2004.

The estate lies south of Dublin and can be reached by car or bus, with visitors typically spending several hours exploring the gardens and courtyard areas. The ground floor now houses shops and dining options, while the upper floors are usually not open to the public.

The Pepperpot Tower in the grounds is said to have been modelled on a favourite 3-inch pepperpot of Lady Wingfield. The estate also holds a pets cemetery whose tombstones have been described as "astonishingly personal".