This was the first successful journey of its kind undertaken by a European; and since it was necessary to avoid suspicion, Vámbéry could not take even fragmentary notes, except by stealth. After a long and perilous journey he arrived back at Pest in May 1864. He went to London to arrange the English language publication of his book about the travels. "Travels in Central Asia" and its Hungarian counterpart "Közép-ázsiai utazás" were published in 1865. Thanks to his travels Vámbéry became an internationally renowned writer and celebrity. He became acquainted with members of British social elite. The Ambassador of Austria in London gave him a letter of recommendation to the Emperor, who received him in an audience and rewarded Vámbéry's international success by granting him professorship in the Royal University of Pest.