Jarmers Tower, Copenhagen: Last 1500s City Wall Ruin

Unlock the story behind Jarmers Tower

2 min

TLDR: Jarmers Tower is the last surviving piece of Copenhagen’s 1500s city wall, named after Prince Jaromar II who once destroyed the city’s earlier defenses. It’s a small, free-to-visit ruin – historically interesting, but only worth a quick stop.

What is the story behind Jarmers Tower?

Jarmers Tower stands amidst Copenhagen's busy streets, a silent witness to medieval times. This robust ruin is the sole surviving piece of the city's 16th-century defensive wall. Built between 1526-1529, its name honors Prince Jaromar II of Rügen. He breached earlier fortifications here in 1259, ravaging Copenhagen.

Why citizens named a defense tower after him remains a mystery. Originally one of eleven, the tower was hidden for centuries. It re-emerged during excavations in the 1880s. Today, its 1.5-meter-thick red brick walls sit on an island, a tangible link to Copenhagen's tumultuous past. It's a fun piece of rubble if you know what it represents but don't expect to be taken back by an impressive tower.

What is the famous tower in Copenhagen?

Jarmers Tower is just fine but it's probably not the 'famous one' in Copenhagen.

No, The Round Tower (Rundetårn) is Copenhagen’s most famous. This 17th-century observatory, built by King Christian IV, features a wide, spiral ramp instead of stairs. You can walk up 7.5 turns to reach its summit. From there, you get a spectacular 360-degree panoramic view of Copenhagen’s rooftops and spires. Emperor Peter the Great from Russia rode a horse up it in 1716 – they probably won't allow this today but you can always ask.

Is it worth visiting Jarmers Tower?

Jarmers Tower offers a unique glimpse into Copenhagen's medieval defenses. It stands as the only surviving section of the 16th-century city wall which makes it a compelling stop for history buffs or those interested in urban development. You see the strong red bricks and imagine earlier sieges. It is free to visit and open always.

Manage your expectations, though. It is a preserved ruin, not an interactive exhibit. Some find it looks like a "pile of red-brick rubble." Located in a small plaza, busy traffic noise surrounds it. It offers no views or facilities. It is a quick stop, needing perhaps 5 minutes. It's very close to Nørreport where you can access the rest of Copenhagen via public transport so you might pass it anyway.

What else can I do in København?

After seeing Jarmers Tower, explore more of Copenhagen's history and culture:

Rosenborg Castle & The King's Garden: Walk from the tower to this 17th-century Rosenborg Castle. It houses Danish Crown Jewels. Stroll through the surrounding King's Garden for a regal green escape.
The Round Tower (Rundetårn): Climb the unique spiral ramp of this iconic 17th-century observatory built by King Christian IV.
The Cisterns (Cisternerne): Experience a unique, subterranean art space. This former underground water reservoir provides an eerie, cool setting for contemporary exhibitions.
Nyhavn & Canal Tour: See colorful 17th-century townhouses and historic ships. Take a canal tour from Nyhavn. See city landmarks from the water, gaining a fresh perspective.
Freetown Christiania: Visit Christiania for a distinct side of Copenhagen. Explore this self-governing commune, known for its vibrant street art and alternative lifestyle.