The small city of Słupsk in northern Poland is an often overlooked gem, home to a charming old town, a beautiful castle, and a variety of interesting museums. The old town is a maze of narrow streets and alleyways, lined with colorful houses and churches. The highlight is the impressive red-brick Słupsk Castle, which dates back to the 13th century and offers stunning views over the city. There are also a few interesting museums in Słupsk, including the Regional Museum, which tells the story of the city and its people, and the Museum of Technology, which showcases a fascinating collection of old machines and tools. With its pretty old town, impressive castle, and interesting museums, Słupsk is well worth a visit.