Uzunkopru located in the district of Edirne is in Turkey's European border. Uzunkopru has the longest stone bridge in the world. Uzunkopru is located on the banks of the Ergene river. Uzunkopru district is a connect point between Turkey and the Balkans, which is an a strategic point on the crossroads of Europe. Uzunkopru neighbors with Greece and Meriç district in the west, Tekirdağ in the east, Kırklareli in the northeast, İpsala and Keşan districts in the south, Edirne center and Havsa district in the north. Its area is 1224 km2. The county on the Ergene plain is 18 meters above sea level and 75% of it is covered with flats. The history of Uzunkopru dates back to the Neolithic Age (8000-5500 BC). B.C. In the 1400s, it became a settlement of Trak tribes and remained like this for a long time. After Traklar, Uzunkopru changed hands many times. From the 7th century onwards, it came under Greek, Persian, Macedonian, Roman and Byzantine domination, respectively. Uzunkopru is the first Turkish city founded by the Ottoman State in Rumelia. It was founded by Sultan II. Murat under the name of the city of Ergene in 1427. II. Murat decided to build a stone bridge over the river since his army could not cross the Ergene river due to the heavy floods caused by the heavy rains and the temporary bridges made of wood were not resistant to floods. The first bridge with 360 eyes, which was started to be built in 1424 and completed in 3 years, was built by II. Murat did not find it sufficient and had it completely demolished and rebuilt (www.uzunkopru.gov.tr, 2017).