Bosanska Krupa · Una · Medieval · later repairs

Bosanska Krupa Fortress

Pset is Bosanska Krupa’s old fortified landmark, whose surviving fabric has undergone repeated conservation.

Location: Bosanska Krupa · Una
Local name: Stari grad Pset
Historical period: Medieval · later repairs

Known as Pset, the fortress occupies a prominent height in central Bosanska Krupa. The municipal visitor brochure records a thirteenth-century mention and notes repeated destruction and repair. The remaining towers and walls retain the outline of a compact fortified site within the modern town. Catholic and Orthodox churches and a mosque stand in the surrounding centre, illustrating how the castle belongs to a wider urban landscape rather than an isolated scenic island.

Explore the 3D model

History and context

The monument is still being cared for

In August 2024 the city announced a contract for restoration and reconstruction of Pset. This is a dated conservation announcement, not confirmation that every proposed intervention was completed. Recent-looking stonework should be understood alongside the monument’s history of repairs.

Grad Bosanska Krupa

Why a single founding date is difficult

Municipal descriptions do not all give the same early chronology. The 2024 notice uses a twelfth-century date, while an earlier visitor brochure places a written mention in the thirteenth century. These statements concern different evidence and do not establish the age of each wall.

The town between two river valleys

The cantonal heritage institute places Bosanska Krupa in the valleys of the Una and Krušnica, with much of the town developing between the hills of Hum and Stari grad. Its historical overview records Babonić ownership, later Zrinski possession and Ottoman control from 1565. These changes place the fortress within the history of a river town, not simply a lonely lookout. The relief around the old fort helps explain where settlement could expand. Distinguish the historic county name Pset from the surviving castle’s physical fabric: a regional name is not a plan or construction date.

Zavod za zaštitu kulturnog naslijeđa USK · historija Bosanske Krupe

Through the centuries

13th c.

The municipal brochure records the fortress in medieval sources.

Architecture & evidence

Northern round bastion

Pset survives as compact masonry defenses on a summit within Bosanska Krupa. The round bastion is modeled roofless, preserving the open character of the remains instead of adding a hypothetical medieval roof.

Lower bastion and lookout

Low circular defenses and open visitor terraces shape the modern site. Timber lookout surfaces in this study represent visitor-era additions; their dimensions are approximate.

Climbing approach

The site belongs to the town's central landscape, overlooking the river and surrounding religious buildings. Stairs connect the lower path to the summit; the route geometry is interpretive and should not be used for wayfinding.

Plan your visit

Consult local heritage or tourism staff for the current approach and access to the ruins; the map point is approximate.

Get directions

Historical sources

How to read this history

A first written mention is not necessarily a construction date. Fortresses were often altered over several centuries. Sections link to their supporting references; the 3D model is an interpretation, not evidence of every historical phase.