The Round Tower

Rising above the dense historic core of Copenhagen, the Rundetaarn (Round Tower) offers a unique vantage point that feels as much like an architectural experiment as a viewing platform.

What to expect — what visitors actually see/do

The defining feature of the tower is its lack of stairs. Instead, a 209-meter-long equestrian spiral ramp winds its way upward, paved with hand-fired yellow Dutch bricks that slope gently toward the summit. As you ascend, you’ll pass the entrance to the hollow core of the tower and the historic library hall, which currently houses a rotating gallery of contemporary art and temporary exhibitions.

Reaching the top, you emerge onto an open-air platform encircled by a wrought-iron grille. From here, you have an unobstructed 360-degree view of Copenhagen’s "City of Spires." You can identify the distant greenery of the King’s Garden, the copper-clad towers of Christiansborg Palace, and the endless expanse of orange clay-tiled rooftops that define the city’s skyline. Look down to see the massive glass sphere hanging in the center of the tower—part of the functioning planetarium.

History & significance — brief background

Commissioned by King Christian IV and completed in 1642, the Rundetaarn was designed as part of the Trinitatis Complex, which included a church and a university library. Its primary purpose was scientific, serving as an astronomical observatory for the University of Copenhagen. The spiral ramp was famously built to accommodate horse-drawn carriages, allowing scholars and royalty—including Tsar Peter the Great, who reportedly drove a carriage to the top in 1716—to reach the observatory without dismounting. It remains the oldest functioning observatory in Europe.

Practical tips — opening hours norms, tickets, queues, best time of day

Tickets: Admission is required (approx. 40 DKK for adults). You can purchase these at the booth in the entrance hall.
Best Time: Aim for the first hour of opening (usually 10:00 AM) to avoid school groups and midday crowds.
Photography: The afternoon "golden hour" provides the most dramatic light for photographing the red-tiled roofs, but prepare for increased tourist density at sunset.
Accessibility: While the ramp makes the tower accessible compared to medieval staircases, the slope is quite steep and might prove challenging for some wheelchair users; consider checking the official website for specialized access info.

Getting there — neighbourhood, transport

The tower is located in the Indre By (Old Town) district, specifically at Købmagergade 52A. It is entirely surrounded by a pedestrian-only zone. The closest Metro station is Nørreport, a five-minute walk away. If arriving by bus, multiple lines serve Gothersgade or Nørreport station.

Nearby — 2-3 sights or eats within walking distance