<human>: Background: Thomas Edward Lawrence was born on 16 August 1888 in Tremadog, Carnarvonshire (now Gwynedd), Wales in a house named Gorphwysfa, now known as Snowdon Lodge. His Anglo-Irish father Thomas Chapman had left his wife Edith after he fell in love and had a son with Sarah Junner, a young Scotswoman who had been engaged as governess to his daughters. Sarah was the daughter of Elizabeth Junner and John Lawrence, who worked as a ship's carpenter and was a son of the household in which Elizabeth had been a servant. She was dismissed four months before Sarah was born.
Context: At the age of 15, Lawrence and his schoolfriend Cyril Beeson cycled around Berkshire, Buckinghamshire, and Oxfordshire, visited almost every village's parish church, studied their monuments and antiquities, and made rubbings of their monumental brasses. Lawrence and Beeson monitored building sites in Oxford and presented their finds to the Ashmolean Museum. The Ashmolean's Annual Report for 1906 said that the two teenage boys "by incessant watchfulness secured everything of antiquarian value which has been found." In the summers of 1906 and 1907, Lawrence and Beeson toured France by bicycle, collecting photographs, drawings, and measurements of medieval castles. In August 1907 Lawrence wrote home: "The Chaignons & the Lamballe people, complimented me on my wonderful French: I have been asked twice since I arrived what part of France I came from".  From 1907 to 1910, Lawrence read History at Jesus College, Oxford. In the summer of 1909, he set out alone on a three-month walking tour of crusader castles in Ottoman Syria, during which he travelled 1,000 mi (1,600 km) on foot. Lawrence graduated with First Class Honours after submitting a thesis titled The Influence of the Crusades on European Military Architecture--to the End of the 12th Century, based on his field research with Beeson in France, notably in Chalus, and his solo research in the Middle East. Lawrence was fascinated by the Middle Ages with his brother Arnold writing in 1937 that for him "medieval researches" were a "dream way of escape from bourgeois England".  In 1910 Lawrence was offered the opportunity to become a practising archaeologist in the Middle East, at Carchemish, in the expedition that D. G. Hogarth was setting up on behalf of the British Museum. Hogarth arranged a "Senior Demyship", a form of scholarship, for Lawrence at Magdalen College, Oxford, to fund Lawrence's work at PS100 a year.  In December 1910, he sailed for Beirut and on his arrival went to Jbail (Byblos), where he studied Arabic. He then went to work on the excavations at Carchemish, near Jerablus in northern Syria, where he worked under Hogarth, R. Campbell Thompson of the British Museum, and Leonard Woolley, until 1914. He later stated that everything which he had accomplished he owed to Hogarth. While excavating at Carchemish, Lawrence met Gertrude Bell. In 1912 Lawrence worked briefly with Flinders Petrie at Kafr Ammar in Egypt. CANNOTANSWER
Question: What is an interesting fact about his travels?

Answer:
<bot>: In the summer of 1909, he set out alone on a three-month walking tour of crusader castles in Ottoman Syria, during which he travelled 1,000 mi (1,600 km) on foot.