The capital city located on the coast of the Baltic Sea is Vilnius, the capital of Lithuania. Vilnius showcases a rich history reflected in its well-preserved medieval architecture and vibrant culture. The city's strategic position along the Baltic allows it to serve as a significant hub for trade and tourism. Furthermore, Vilnius is known for its beautiful old town, which is a UNESCO World Heritage site, making it a popular destination for visitors attracted to its historic charm and scenic waterfront.