Found in the Istrian Region of southwestern Slovenia, Koper is home to the largest commercial port in Slovenia. Just 5km from Slovenia's boarder with Italy, the Italian influence can be felt thought the city. The 15th-century Praetorian Palace and the Loggia Palace are prime examples with their Gothic Venetian architecture. The 12th century Carmine Rotunda church, and the Cathedral of St Nazarius, with its 14th-century tower also offer a view into the citys long history.