After crossing the border from Greece, you soon arrive in the major city of Edirne. Originally founded by the Romans, Edirne has changed hands many times over the centuries and the modern city contains several impressive historical buildings most notably the Selimiye Mosque, which has the highest minaret in Turkey (70.9m). From Edirne there is an attractive stretch of the route next to Lake Kayalıköy on the way to Kırklareli. This leads back to Bulgaria where you follow the signs to Carevo and the end of the Iron Curtain Trail. As a reward for all your efforts, you can take a dip in the Black Sea and relax.