The Life and Letters of Ogier Ghiselin de Busbecq is a tell-all of de Busbecq's experiences as an ambassador. Ogier Ghiselin de Busbecq, sometimes Augier Ghislain de Busbecq, was a 16th-century Flemish writer, herbalist, and diplomat in the employ of three generations of Austrian monarchs. He served as ambassador to the Ottoman Empire in Constantinople and in 1581 published a book about his time there, Itinera Constantinopolitanum et Amasianum, re-published in 1595 under the title of Turcicae epistolae or Turkish Letters.

The observations of a 16th-century Habsburg ambassador to Constantinople.