The Round Tower

About

The Round Tower (Rundetårn) in Copenhagen is a 17th-century architectural gem built by King Christian IV as part of the Trinitatis Complex, combining an observatory, church, and university library. Completed in 1642, it remains Europe’s oldest functioning observatory. Its most iconic feature is the 7.5-turn spiral ramp, designed to allow scholars and their equipment to ascend without stairs. Visitors today can walk this unique path to a panoramic viewing platform offering sweeping views of the city. The tower also hosts exhibitions and cultural events in its historic Library Hall, once frequented by Hans Christian Andersen. A symbol of Denmark’s scientific ambition, the Round Tower blends history, astronomy, and storytelling in one unforgettable experience.

Copenhagen Denmark

Location

The Round Tower (Rundetårn) is located at Købmagergade 52A, in the heart of Copenhagen’s Indre By district. Built in the 17th century by King Christian IV, it served as an astronomical observatory for the University of Copenhagen and is now a prominent cultural venue. The tower features a unique 7.5-turn spiral ramp leading to an observation platform that offers spectacular 360-degree views over Copenhagen’s historic Latin Quarter and city rooftops. Halfway up, the Library Hall, originally Denmark’s first major university library, hosts exhibitions, concerts, and events, reflecting the tower’s rich cultural legacy. Nearby, visitors can easily explore central Copenhagen’s pedestrian shopping street Strøget, enjoy cafes and boutiques, and visit key landmarks such as the National Museum of Denmark and Rosenborg Castle. The tower is just a short walk from Nørreport Station, connecting visitors to other parts of the city. The area combines history, culture, and lively urban life, making the Round Tower a captivating destination for sightseeing and cultural immersion in Copenhagen.