The Round Tower

About

The Round Tower (Danish: Rundetårn) is a 17th‑century monument in the heart of Copenhagen that offers a unique blend of astronomy, history and panoramic city views. King Christian IV commissioned the tower as a scientific observatory, and today it houses the world’s oldest functioning observatory, the Tower Library Hall, and a small café. Visitors climb a winding spiral ramp to reach a 34.8‑meter high viewing platform that offers sweeping 360‑degree vistas of the city. The tower’s main attractions include the Observatory, the Bell Loft, the Planetarium, and the Library Hall, each showcasing different aspects of Danish cultural heritage and science. The Tower’s admission is 60 DKK for adults, 40 DKK for students with valid ID, and free for children 0‑17; a child under 11 must be accompanied by an adult. While the tower is open 10:00–20:00 from April to September, it is open 10:00–18:00 from November to March. During winter, additional special opening hours apply, and the Observatory is closed for extensive restoration work scheduled for 2025-2026, with a reopening expected in the fall of 2026. The Tower remains wheelchair‑inaccessible due to its narrow stairs, but it is an ideal destination for families, history enthusiasts, science lovers, and curious travelers.

Good to Know

At a glance

• Typical visit: about 1 hour 30 minutes

Tickets & pricing