圆塔, or the Round Tower, is a historical structure located in Copenhagen, Denmark. Built in the 17th century, it was designed as an observatory and part of the University of Copenhagen. The tower features a unique spiral ramp that allows visitors to ascend without stairs, making it accessible to everyone. The Round Tower stands at 36 meters tall and offers panoramic views of the city from its top. Its architecture combines Renaissance and Baroque styles, showcasing beautiful brickwork and a distinctive copper dome. Today, it serves as a cultural venue, hosting exhibitions and events throughout the year.