Sønderborg is a picturesque town located in southern Denmark, situated on the island of Als. It is known for its beautiful waterfront along the Sønderborg Bay and its rich history, which includes the impressive Sønderborg Castle, dating back to the 12th century. The town serves as a cultural hub, offering various museums, parks, and recreational activities. The town is also an important center for education and industry, hosting institutions like the University of Southern Denmark. With a population of around 30,000, Sønderborg combines modern amenities with charming historical architecture, making it an attractive destination for both residents and visitors.