Copenhagen's Cisterns (2026 Guide): Descend into a Hidden World of Art

TLDR: Descend into Copenhagen's Cisterns, a former underground water reservoir transformed into a chillingly immersive art space beneath Søndermarken Park. Expect cold, damp air, echoing darkness, unique dripstone formations, and thought-provoking site-specific art, offering a truly sensory and historical journey.

Stepping into the Cisterns in Frederiksberg felt like entering a different dimension, a hidden world far beneath the everyday hum of Copenhagen. If you're seeking an experience that marries history, art, and raw sensory input in an utterly unique way, then read on. 

This article will guide you through what I discovered, from its intriguing past to practical tips for your own visit, ensuring you're ready for this subterranean adventure.

What is the story behind Cisterns in Søndermarken?

Imagine Copenhagen in the mid-19th century, grappling with devastating cholera outbreaks. The city urgently needed clean, reliable water. The solution, which began construction in 1856, was to build these massive underground reservoirs beneath Søndermarken Park.

Finished in just three years, the Cisterns held 16 million liters of drinking water, playing a crucial role in saving lives and allowing Copenhagen to grow. By 1933, they were no longer needed for water and lay forgotten for decades. 

A remarkable transformation began in 1996 when local enthusiasts opened them for cultural activities, leading to their current life as a unique exhibition space for contemporary art, managed by the Frederiksberg Museums since 2013.

What are the Cisterns in Copenhagen?

Today, the Cisterns are much more than just old water tanks. They are a vast, dark, and remarkably damp underground realm beneath Frederiksberg. They are also Denmark's only true dripstone cave. Originally holding 16 million liters, these chambers now house site-specific contemporary art installations. 

When you enter, you immediately notice the cool, humid air. Everywhere, you can see impressive stalactites hanging from the ceiling and stalagmites rising from the floor – natural formations crafted by decades of mineral-rich water seeping through the concrete. 

It’s a living, breathing space where nature slowly reclaims what humans built, providing a truly atmospheric backdrop for art.

Where are the Cisterns located?

You'll find the Cisterns tucked away beneath Frederiksberg Hill, right in the heart of Søndermarken Park. Look for the distinct glass pyramids that mark the entrance, situated directly across from the grand Frederiksberg Castle. 

Once you descend, you’re truly beneath the surface, surrounded by cool concrete. The air felt thick with humidity, and I noticed my phone had no signal, which surprisingly added to the feeling of stepping outside the modern world. 

This subterranean quiet encourages a profound focus on your surroundings and the art within.

Are the Cisterns free?

Entry to the Cisterns is not entirely free for everyone. If you're visiting with children or teenagers under 18, they get in without charge, which is great for families. 

However, adult tickets typically cost 120 DKK. Students and young people under 27 can get a reduced rate of 90 DKK. You can find all the ticket prices here. 

Considering this unique space once provided clean water to combat a cholera epidemic, the fee feels reasonable for the unusual artistic journey it now offers, complete with its natural dripstone formations.

Is it cold in the Cisterns?

Yes, prepare yourself: it is definitely cold inside the Cisterns. Being an underground former water reservoir with no natural light, the temperature remains consistently low, regardless of the season above ground. 

On my visit, even though it was mild outside, the air inside hovered around a steady 8 to 10°C (about 46-50°F). In mid-winter, it can dip as low as 4°C (39°F), and even in late summer, it rarely climbs above 16°C (61°F). The air is also almost 100% humid, making the chill feel more intense. 

This constant cool, dampness, combined with the echoing acoustics, creates a distinct atmosphere that becomes part of the art itself.

What should I wear when visiting Cisternerne?

Given the consistently cool and damp environment I just described, dressing appropriately is key to enjoying your visit. 

My top advice is to layer up! Even on a warm day, you'll want a warm jacket or a substantial sweater. A scarf might also be a good idea to keep your neck warm. As you'll be navigating dimly lit spaces with some steps and moist floors, comfortable, closed-toe shoes are essential. 

I saw many people unprepared for the temperature, and their discomfort clearly affected their experience.

Is it worth visiting Cisterns in Søndermarken?

For those seeking an unconventional art experience, the Cisterns are absolutely worth a visit. It's not your typical museum. I found the site-specific art installations, which cleverly use the inherent darkness, cold, and humidity, to be truly immersive. 

The natural dripstone formations add an eerie, almost cathedral-like beauty. I appreciated the feeling of being detached from the outside world, without phone signal or daylight, which allowed for deep contemplation.

However, it's important to note the drawbacks. It is undeniably cold and damp, as I’ve mentioned, so if you're sensitive to that, be warned. Accessibility is a concern; there are many steps, and it’s not wheelchair-friendly. 

Allow at least an hour to truly absorb the current exhibition. To easily prioritize if this unique, subterranean art space fits your travel interests among other Frederiksberg attractions, use StoryHunt to learn more about the area.

What else can I do in Frederiksberg?

After your cool, subterranean journey through the Cisterns, Frederiksberg offers plenty to explore back in the daylight. You can read our full guide to all the top attractions in Frederiksberg here.

And for an even richer understanding of these spots and more, StoryHunt offers engaging audio guides that can act as your personal storyteller, revealing the hidden history and charm of Frederiksberg at your own pace.