Schönbrunn Palace consists of 460 acres plus a surrounding buffer zone. The majority of the property is devoted to gardens. The picturesque centerpiece is The Great Parterre. These symmetrical lawns encircled by gravel contain sculpted flowerbeds resembling embroidery. Other garden features include a landscaped maze (Irrgarten), the Eastern and Western Fountains, a botanical garden (Rosarium), four botanical houses, Roman Ruins (Römische Ruine), Obelisk Fountain (Obeliskbrunnen), a swimming pool (Schönbrunner Bad) and the world’s oldest zoo (Tiergarten).