Rundetaarn: Copenhagen’s Iconic Round Tower

Standing proudly in central Copenhagen since 1642, Rundetaarn (The Round Tower) represents one of Denmark’s most iconic architectural landmarks. Built during the reign of King Christian IV as part of a larger university complex, this 17th-century tower was originally designed to serve as an astronomical observatory for the University of Copenhagen.

What makes Rundetaarn truly unique is its revolutionary architectural design. Rather than traditional stairs, Christian IV commissioned a wide, spiraling ramp that winds up the interior of the tower. This innovative feature allowed horses to carry heavy astronomical equipment to the observatory at the top, making it both practical and architecturally distinctive.

The observatory functioned actively for the University until the mid-19th century, when urban development made accurate astronomical observations increasingly difficult. However, the tower found new life in 1928 when it was reconstructed as a public observatory, providing access for amateur astronomers and curious visitors alike.

Today, Rundetaarn serves multiple purposes as a living cultural landmark. The tower houses rotating exhibitions, concerts, and various cultural activities throughout the year. Visitors can climb the famous spiral ramp to reach the observation platform, which offers spectacular panoramic views across Copenhagen’s rooftops and spires, making it a must-visit destination for anyone exploring Denmark’s capital.