Already 94 years ago in 1910, Dr. Hans Christian Jacobaeus performed the first clinical laparoscopic surgery in Stockholm. His pioneering procedure was based on the animal experiments of Georg Kelling (1866-1945), a German physician from Dresden, who performed the first laparoscopic intervention in 1901 using a Nitze cystoscope in a dog. In 1910 Jacobaeus published his first experiences with laparoscopic surgery in the Münchner Medizinische Wochenschrift under the title "The possibility to perform cystoscopy in examinations of serous cavities." He used this technique for diagnostic purposes in unclear abdominal complaints and functional impairment. Jacobaeus was the first who pointed out the possibility of causing injury to organs, especially the gut, by inserting the trocar. In 1910 Jacobaeus recognized the immense diagnostic and therapeutic possibilities of laparoscopic surgery, but also the difficulties and limits. He also was the first who recognized the need to complete training sessions on animals and corpses. He demanded the development of special laparoscopic instruments to optimize and simplify the operation.