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Zrin Castle today

Croatia · Ruin

Zrin Castle

Utvrda Zrin

Zrin Castle (Gradina Zrin) is a ruined medieval fortress on a hill above the village of Zrin in central Croatia. First recorded in the 13th century, it was a noble stronghold until Ottoman conquest in the 16th century. Today only fragmentary stone walls, a tall keep remnant and stretches of curtain wall survive amid grassy slopes.

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Photograph via Wikimedia Commons

First raised

1300

Its prime

1560

Today

Ruin

As it stood in 1560

What Zrin Castle looked like in its prime.

A tall, rectangular stone keep remnant of coursed pale-grey limestone dominates a low, broken curtain wall that steps down the hillside; the curtain includes a roughly semicircular arched breach. The masonry mixes larger squared blocks at corners with rougher rubble infill. The site sits on an open grassy hilltop with scattered low foundations and piles of stones around the courtyard; nearby trees and distant rolling hills form the horizon.

Its story

The story of Zrin Castle.

Zrin Castle was first mentioned in the 13th century as a fortress ruled by the Babonić clan; between 1328 and 1347 it was possessed by members of the Iločki family. In 1347 King Louis I the Great bestowed the fortress on the noble Šubić family, who then changed their family name after it, becoming the Zrinski.

The most famous of the line was Nikola IV Zrinski (1507/1508–1566), Croatian nobleman and general. The castle remained a noble stronghold until the Ottoman conquest in the 16th century; today only fragmentary stone walls, the remnant of a tall keep and stretches of curtain wall survive on the hill above the village of Zrin.

Step inside

5 places to explore in 1560.

The record describes 5 distinct spots at Zrin Castle, including 1 interior: inside the hollowed keep. Create your own photoreal reconstruction and explore every one, more scenes means more rooms, more angles, and more of the place to stand in.

Approach from the south meadowBase of the keep (exterior)Inside the hollowed keepBreached curtain wall archInner courtyard with rubble

Build Your Own Castle

Recreate Zrin Castle with AI to explore it.

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Castle Siege

Play Castle Siege at Zrin Castle.

A strategy game played on Zrin Castle’s real ground plan: the same surveyed walls shown in the archive below. Post your finite garrison on the battlements between assaults, then hold out as rams, siege towers, trebuchets and sappers arrive in ever-worse waves.

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Whose castle

Clans who held Zrin Castle.

The families that held Zrin Castle for a decade or more across its history, follow a name to its clan.

  • Babonić

    First mentioned in the 13th century as a fortress ruled by the Babonić clan.

  • Iločki

    Possessed by members of the Iločki family, 1328–1347.

  • Zrinski

    Bestowed on the noble Šubić family by King Louis I in 1347; they took the name Zrinski from the castle and held it until the Ottoman conquest in the 16th century.

From the archive

Zrin Castle on paper: the measured plan and period views.

The survey plan and photographs below are the ground truth this page's reconstructions are checked against, drawn and photographed while the castle was still a working garrison. Every image is public-domain or openly licensed, with its source named.

Zrin (Dvor na Uni) - Grad srednjovjekovni, detalj: glavna kula iz unutarnjeg dvorišta, Zrin Castle

Zrin (Dvor na Uni) - Grad srednjovjekovni, detalj: glavna kula iz unutarnjeg dvorišta

· Ministry of Culture and Media of the Republic of Croatia (via Europeana)

Public domain

Zrin (Dvor na Uni) - Grad sredovječni, detalj iz unutrašnjosti (sa čuvarom i seljakom), Zrin Castle

Zrin (Dvor na Uni) - Grad sredovječni, detalj iz unutrašnjosti (sa čuvarom i seljakom)

· Ministry of Culture and Media of the Republic of Croatia (via Europeana)

Public domain

Questions about Zrin Castle

What is the history of Zrin Castle?

Zrin Castle was first recorded in the 13th century as a fortress ruled by the Babonić clan. In 1347, King Louis I bestowed it on the Šubić family, who became the Zrinski. The castle remained in their possession until the Ottoman conquest on 20 October 1577, and it was retaken from the Ottomans in 1718.

What is inside Zrin Castle?

Inside Zrin Castle were high, strongly built rooms used as a noble residence and for housing the military garrison. The inner fortress also contained a square tower in the north-west corner and a small religious building. Today, the keep is hollowed out, while the inner courtyard contains rubble and low foundations.

Why was Zrin Castle built, and what was it used for?

Zrin Castle was built as a fortified noble stronghold. It served as the centre of the Zrinski family’s possessions and later remained an important military position, including defence against Ottoman attacks. After the Ottoman expulsion, it lost its strategic importance, although a military presence continued there and the fortress was restored in 1753.

Where is Zrin Castle?

Zrin Castle is above the village of Zrin in central Croatia, in Dvor municipality, south of Sisak. It stands on the slopes of Zrinska gora, with the village below it. The castle can be reached by road from Dvor or Hrvatska Kostajnica.

When was Zrin Castle built?

Zrin Castle was first raised in 1300, placing its construction in the 13th century. It was first mentioned in written sources during that century, and the fortress developed through later additions and rebuilding.

Was Zrin Castle ever attacked or besieged?

Zrin Castle fell to the Ottomans in October 1577 after its defensive walls had deteriorated and its garrison was too small. The Ottoman forces captured it on 20 October, and two commanders, four corporals, one ensign and 25 soldiers were killed or captured. The castle was later retaken from the Ottomans in 1718.

Which family or clan held Zrin Castle?

Zrin Castle was held by the Babonić clan in the 13th century and by members of the Iločki family between 1328 and 1347. King Louis I bestowed it on the Šubić family in 1347, after which they took the name Zrinski from the castle. The Zrinski held it until the Ottoman conquest in the 16th century.

What did Zrin Castle look like in its prime?

In its prime, Zrin Castle was a stone fortress with a tall, rectangular keep and a strong wall around an oval plateau. Its defences included towers, three entrances and a curtain wall, while the inner fortress had two round towers. The surviving masonry combines larger squared corner blocks with rougher rubble infill.

Is Zrin Castle still standing, or is it a ruin?

Zrin Castle is a ruin today, with fragmentary stone walls, a tall keep remnant and stretches of curtain wall surviving on the grassy hilltop. The south defensive tower is badly ruined but survives to the height of its second floor. Restoration and conservation began in 2017, including reconstruction of part of the southern defensive wall.

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