Sønderborg is a Danish city located in the southern part of Denmark. The city has almost 28,000 inhabitants. In recent years, Sønderborg has become a center for trade, tourism, industry, and education in the southern part of Denmark. The city is home to several industrial companies.

We explored the city from the first day to the last. On the second day in Sønderborg, we walked through the old city center, then went to the beach and around the castle. We also stopped there for a while and then went to see the harbor. While we were walking, we also saw an interesting building on the sea. On the way to the dormitory, we also visited a windmill.