For more than five decades, the fate of the Holy Roman Empire’s most sacred treasures was intimately bound to a Gothic fortress rising from the Czech forests. The Imperial Regalia—the crown, sceptre, orb, and relics that legitimized emperors—spent much of the late Middle Ages not in Germany, but locked within the Chapel of the Holy Cross at Karštejn Castle, thirty kilometres southwest of Prague.
The connection began when Charles IV—King of Bohemia and Holy Roman Emperor—founded Karštejn as a purpose-built stronghold for the Empire’s most precious objects. Among them were the Imperial Crown, crafted in the 10th century, and the Holy Lance, believed to have pierced Christ’s side. By housing the regalia in Bohemia rather than in traditional German imperial cities, he elevated Prague to the symbolic heart of his realm.
The choice of Karštejn was strategic. Perched on a limestone cliff above the Berounka River, the castle’s concentric defenses made it nearly impregnable. The Chapel of the Holy Cross, where the regalia were kept, occupied the castle’s innermost sanctum—the Great Tower. Its walls were adorned with 129 panel paintings by Master Theodoric and encrusted with semi-precious stones, creating a jewel box for jewels. Access required passing through multiple gates and courtyards, each more restricted than the last. The chapel was consecrated in 1365, marking the formal beginning of its role as repository for the imperial treasures.
The German imperial cities, particularly Nuremberg, initially viewed this arrangement with suspicion. Nuremberg had long served as a traditional repository for the regalia during imperial progresses, and the city’s patricians considered themselves natural guardians of imperial tradition. Yet Charles IV’s Bohemian solution proved durable. The regalia were stored at Karštejn until 1420, when the outbreak of the Hussite Wars—a proto-Protestant rebellion that engulfed Bohemia—made their position untenable.
In 1421, as Hussite forces threatened the castle, the treasures were evacuated. After a journey that took them through Hungary, they arrived in Nuremberg in 1424, where they remained (except during times of war) until 1796. The Nuremberg burghers built a special chapel in the Heilig-Geist-Spital to house them, and the annual display of the regalia became a cornerstone of the city’s identity and a major pilgrimage event.
Today, the Imperial Regalia reside in Vienna’s Hofburg Palace, but Karštejn’s Chapel of the Holy Cross still bears witness to its extraordinary past. Visitors to the castle—accessible only by guided tour due to the fragility of the medieval interiors—can see the very chamber where Nuremberg’s future treasures once rested. The chapel’s restoration has revealed the full glory of its 14th-century decoration, offering a glimpse of how Charles IV staged imperial power through architecture and sacred art.
The story of the regalia’s journey from Bohemia to Nuremberg and finally to Vienna traces the shifting centres of power within the Holy Roman Empire. For Nuremberg, the centuries spent as guardian of the crown jewels reinforced its status as an imperial city. For Karštejn, those same objects transformed a Bohemian fortress into a pilgrimage site that connected the German-speaking lands with the Slavic east, a role it continues to play for the thousands of visitors who climb to its gates each year.
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