There are plenty of interesting historic sights around Copenhagen for a day trip, like the outstanding Renaissance style Kronborg Castle. Please note it's also easy to visit in Malmö, Sweden over the Øresund Bridge which is the longest combined road and rail bridge in Europe.
At the heart of Malmö lies the Big Square (Stortorget). There is a statue of King Karl X Gustav of Sweden, who took the city from Danish dominion. The ornate Malmö City Hall (built in 1546) is on the east side, and in the northwest corner is Kockska Huset, the house of Jörgen Kock, a German immigrant who became mayor of the city and achieved wealth simply and directly: by taking control of the city mint. In the winter the square becomes a skating rink.
Carlsberg center is located in Valby at the location of the first Carlsberg Brewery. The visitor centre will give you an idea of how the world-famous Carlsberg Beer is made. Carlsberg is among the largest tourist attractions in Copenhagen. The Old Carlsberg Brewery from 1847 has been converted into a modern centre for visitors which exhibits the history of the beer.
Kakesbeck is one of the largest medieval fortifications in Münsterland and the oldest castle in Lüdinghausen. The imposingly grown complex originated in 1120 as a motte, a small hilltop tower castle. After numerous changes of ownership, the castle was extended onto two islands, but it was not until the 14th century that it underwent significant alterations and extensions under the von Oer family. The estate experienced its heyday in the middle of the 18th century, when it covered an area of almost one square kilometre and consisted of five further outer castles in addition to the core castle, which were secured by ramparts and moats.
The well-maintained condition of the castle today is thanks to the late Wilfried Grewing, the former lord of the castle. The foundation named after him has been particularly committed to preserving the property since 2020.