Tallinn, the capital city of Estonia, is also the country’s main seaport. Located on Estonia's north coast, Tallinn’s main attraction is its old town, the well preserved medieval old-town has made the UNESCO World Heritage sites list. Tallinn is one of the oldest cities of Northern Europe. The long-winding cobblestone streets, red roofs and watchtowers of the old town area make the city feel like a page from a medieval storybook. Tallinn is full of interesting sights for tourists. These include the old town area that hosts the medieval town wall, the Toompea Castle and the Dome Church. Other places of interest are the Russian Orthodox Cathedral of Alexander Nevskij, Town Hall Square, and the St.Olaf's Church. Tallinn is a picturesque town with medieval charm.