sentences:  The gardens were established by Sir Thomas Hanbury on a small, steep peninsula jutting southwards from an altitude of 103 meters down into the Mediterranean Sea.He purchased the extant Palazzo Orengo property in 1867, and over decades created the garden with the aid of pharmacologist Daniel Hanbury (his brother), the botanist and landscape designer Ludwig Winter, and scientists including Gustav Cronemayer, Kurt Dinter, and Alwin Berger.In 1912 the "Hortus Mortolensis", the catalogue of the garden, contained 5800 species, although the garden itself had more.