The Grotto by Niki de Saint Phallehttps://www.visit-hannover.com/en/Sightseeing-City-Tours/Tourist-Highlights/Royal-Gardens-of-Herrenhausen/The-Grotto-by-Niki-de-Saint-Phalle2013-07-09T14:36:46+02:00The Artist: Niki de Saint PhalleMax Mustermannmax@mustermann.dehttps://www.visit-hannover.com/en/Sightseeing-City-Tours/Tourist-Highlights/Royal-Gardens-of-Herrenhausen/The-Grotto-by-Niki-de-Saint-Phalle/The-Artist-Niki-de-Saint-Phalle2013-07-09T14:36:46+02:00Niki de Saint Phalle left marks all over Hannover: she designed not only the Grotto in Herrenhausen, but also the Nanas beside the River Leine.