Kärnan is a medieval tower located in the city of Helsingborg, Sweden. It was built in the 14th century as part of a larger fortress designed to protect the city from invasions. The tower stands at about 35 meters tall and is one of the few remnants of the original fortress, showcasing Gothic architectural style. Today, Kärnan serves as a popular tourist attraction, offering visitors panoramic views of the surrounding area, including the Öresund Strait and the city itself. The site is also a symbol of Helsingborg's rich history and cultural heritage, drawing history enthusiasts and tourists alike.