The former summer residence of the Habsburg imperial family takes its name from a beautiful spring that was found on this site. An earlier hunting lodge was destroyed by the Turks, so Leopod I asked Johann Bernhard Fisher von Erlach to design a grand Baroque residence here in 1695. However, the project was completed in mid-18th century when Maria Theresa employed Nikolaus Pacassi. View from the Ne. By Mihai-bogdan Lazar.