The Hermitage Pavilion (1734) in the 20th arrondissement, was originally part of the Chateau of de Bagnolet, the estate of the Duchess of Orleans, Louis XIV's daughter, in what is now the Jardin de l'Hospice Debrousse. It was one of three Regency style pavilions, which it is the last surviving, that was built as an unheated 'pleasure pavilion' to be used during the hot seasons. The castle was demolished in 1770 and after changing hands a number of times, the pavilion became the property of Baron de Batz, where it was briefly a refuge for conspirators who tried to save Louis XVI's life in 1793. Close to the pavilion, in the grounds of the former Chateau de Bagnolet, a hospice for old people was founded in 1884, which still exists. The pavilion belonged to the Debrousse hospice until 1972, before being restored and transferred to the City of Paris in 1987.
