The Round Tower Copenhagen: Climb into History & Sky-High Views

In the heart of Copenhagen stands a monument that has fascinated visitors for centuries—the Round Tower (Rundetårn). Built in the 17th century as an astronomical observatory, this cylindrical tower combines science, architecture, and panoramic beauty in one unforgettable experience.
 

As your local tour guide, I’ll take you through everything you need to know about this unique attraction: from its fascinating spiral ramp to the best photo spots at the top.

📍 Where Is the Round Tower?

Address: Købmagergade 52A, 1150 Copenhagen, Denmark

Located in: The Old Town (Indre By), Copenhagen

Nearby: Strøget shopping street, Rosenborg Castle, and Copenhagen Cathedral

🚶 Just a short walk from Nørreport Station and major city landmarks.

🏛️ A Brief History of the Round Tower

👑 Built for Science and Royal Ambition

The Round Tower was commissioned by King Christian IV and completed in 1642 as part of the Trinitatis Complex, which included a church, library, and observatory. It was designed to serve the University of Copenhagen, blending religious, educational, and scientific functions.

Key historical highlights:

1642: Tower construction completed

1681–1710: Danish astronomer Ole Rømer used the observatory

Present Day: Still used for amateur astronomy and public viewing

🔭 It is Europe’s oldest functioning observatory, still open to the public today.

🧭 What to See & Do at the Round Tower

🌀 1. The Spiral Ramp – A Walk into History

One of the Round Tower’s most iconic features is its spiral ramp, which winds 209 meters (686 feet) around the hollow core. Unlike staircases, this cobbled path was designed to allow horses and carts to ascend to the top.

No stairs until the very top

7.5 turns to the observation deck

Great for all ages and stroller-accessible

Fun fact: Russian Tsar Peter the Great once rode up on horseback!

📸 Don’t miss the “echo spot” halfway up—your voice will bounce off the walls!

📚 2. The Library Hall – Art, Exhibitions & Events

Halfway up the tower, you’ll reach the Library Hall, which once held the University of Copenhagen’s book collection. Today, it functions as a vibrant exhibition space.

Hosts art shows, historical exhibitions, talks, and concerts

Displays often feature Danish contemporary artists

Elegant 18th-century interiors with arched ceilings

🎨 Events change monthly, so check the schedule for current exhibits.

🔭 3. The Observatory – Stargazing from the Tower Top

At the very top of the Round Tower is the oldest active observatory in Europe, offering a window into the stars.

Public astronomy nights during winter (Oct–Mar)

Use the refracting telescope to view the Moon, planets, and stars

Guides and amateur astronomers available for Q&A

🌌 A unique way to experience the tower as originally intended—through the eyes of the cosmos.

🏙️ 4. The Outdoor Observation Deck – Views Across Copenhagen

One of the biggest draws is the 360-degree observation deck, encircling the tower at 34.8 meters (114 ft) above street level.

What you can see:

🎡 Tivoli Gardens Ferris Wheel

🏰 Rosenborg Castle

⛪ Church spires and copper rooftops of historic Copenhagen

🌳 The greenery of Østre Anlæg and The King’s Garden

📷 Best time for photos: sunset or early morning for fewer crowds and golden lighting.

🎟️ Tickets, Opening Hours & Visitor Info

⏰ Opening Hours

Daily: 10:00 AM – 6:00 PM

Tuesdays & Wednesdays (Apr–Oct): Extended until 9:00 PM

Open all year except for holidays like Christmas Eve

💰 Ticket Prices

Adults: 40 DKK

Children (5–15 years): 10 DKK

Under 5 years: Free

Student/Senior discounts available

🎟️ Tickets can be purchased at the entrance or online.

🛍️ Souvenir Shop & Nearby Café

🛒 Gift Shop: Unique items like astronomy-themed gifts, Danish design items, and art prints

☕ Nearby Cafés: La Glace (Copenhagen’s oldest patisserie), or Coffee Collective on nearby Strædet

🚶 Accessibility & Visitor Tips

The spiral ramp is stroller- and wheelchair-friendly until the final narrow staircase to the rooftop

Restrooms available near the Library Hall

Lockers for small bags available on site

No elevator, so plan accordingly for accessibility needs

🧒 Family-Friendly Features

Kids love the walkable ramp and echo spots

Seasonal events and workshops for children

Educational signs throughout the tower in English and Danish

🧩 Great spot to combine fun with learning for young explorers!

🧭 Directions – How to Get There

🚇 By Metro:

Closest stop: Nørreport Station (M1, M2, M3, M4)

A 5-minute walk to the tower

🚲 By Bike:

Copenhagen’s city bike racks available nearby

Rentals through Donkey Republic or Bycyklen

🚌 By Bus:

Bus routes 5C, 6A, 14, 184, and 185 stop at Nørreport

📍 Located on Købmagergade, one of the city’s best shopping streets.

📸 Top Photo Tips

📷 Capture the spiral ramp from the center looking up—it’s a social media favorite!

🪞 Use reflections from the windows at the top for creative city shots

☁️ Visit on a clear day for the best skyline photos

🌙 Try a night visit during winter astronomy evenings for unique starry photos

🏙️ Nearby Attractions

Make the most of your visit to central Copenhagen:

🏰 Rosenborg Castle – Crown jewels & royal history

🌸 The King’s Garden – A perfect picnic spot

🛍️ Strøget – One of Europe’s longest pedestrian shopping streets

🖼️ David Collection – Islamic art and Danish fine arts

⛪ Church of Our Lady (Copenhagen Cathedral) – Venue for royal weddings

🧭 Fun Facts & Curiosities

📐 The tower is exactly 36 meters tall and 15 meters wide

🐴 Built without stairs—designed so a horse and carriage could ride to the top

🕵️ Has been used by spies, astronomers, and artists

👟 Annual Tower Run event challenges runners to race up the spiral ramp

🏁 Final Thoughts – Why Visit the Round Tower?

The Round Tower isn’t just a building—it’s a journey through Danish history, architecture, science, and art. From the moment you step inside, its unique spiral design, elevated viewpoints, and scientific legacy make it one of Copenhagen’s most distinctive landmarks.

Whether you’re a history buff, an architecture enthusiast, or simply in search of the best city views, the Rundetårn offers a one-of-a-kind experience that’s family-friendly, centrally located, and rich in character.