This impressive bridge, dating back to 1866, with its 20-meter tall and 40-meters long arch, is maybe the biggest not only in Greece but also in Europe. It is in very good condition. However, two tries were needed to build it above the Arachthos River, in 1860 and 1863 when it was destroyed on the day of its inauguration. Arachthos was the natural border between Greece and Turkey from 1881 till 1913 so an outpost, customs and a hostel were built on its banks. Do not miss it!