Joensuu is a city located in the district of Mustavaara in the eastern part of Finland. It is known for its beautiful natural surroundings, including the nearby Koli National Park and the Pielinen Lake. The city itself is a vibrant and bustling urban center, with a mix of modern architecture and historic buildings. Joensuu is also a hub for culture and education, with a university and several museums and galleries. The city has a lively arts and music scene, with regular events and festivals throughout the year. Additionally, Joensuu offers a range of outdoor activities, including hiking, skiing, and boating, making it a popular destination for nature enthusiasts.