Cloak Bridge: Český Krumlov's Multi-Tiered Viaduct

Architectural Design and Stacked Passages

The Cloak Bridge (Plášťový most) is an arched stone viaduct standing between 30 and 40 meters tall, spanning an artificially cut defensive moat and ravine on the western side of Český Krumlov Castle. Resembling an ancient Roman aqueduct, the structure is supported by massive stone pillars that link the Upper Castle's fourth courtyard with the fifth courtyard.

Beyond serving as a bridge, the viaduct is an engineering marvel that stacks three distinct levels over the ravine. At the courtyard grade, an open-air walkway allows pedestrian transit between courtyards. Directly above this walkway sit two fully enclosed Baroque corridors. The lower enclosed passage connects the palace's Masquerade Hall (Maškarní sál) to the Royal Box of the Baroque Castle Theatre. The uppermost passage links the Castle Picture Gallery directly to the Castle Gardens.

Origin of the Name

Despite its poetic designation, the bridge's moniker does not refer to garments or flowing fabric. The name originates from the medieval military term plášť (cloak or mantle). In regional fortification terminology, this referred to the protective outer defensive wall or rampart that once guarded the western perimeter of the castle complex. Over time, the crossing built across this fortified zone retained the name "on the cloak."

Construction History and Evolution

The earliest historical records mention a wooden footbridge and drawbridge spanning the ravine in the 15th century. During the reign of Emperor Rudolf II, this crossing functioned as a fortified checkpoint fitted with a gate and wicket.

The transition toward a covered corridor began after Prince Johann Christian I von Eggenberg built the Baroque Castle Theatre between 1681 and 1684. In 1686, work began on a new wooden crossing, followed around 1706 to 1708 by the construction of the lower enclosed theatre corridor. The transition from timber to a multi-tiered stone viaduct occurred in phases starting around 1707 and progressing through 1748 and 1764. The corridors were structurally joined and finalized by 1777 under Prince Josef I Adam of Schwarzenberg, giving the bridge the monumental Baroque appearance it maintains today.

Aristocratic Purpose and Present Use

The enclosed corridors were engineered to preserve social isolation for the castle's rulers. The overhead route allowed the nobility to move between residential chambers, theatrical performances, and the elevated terraced gardens without encountering domestic servants, courtiers, or inclement weather. At its greatest historical extent, this enclosed path formed part of an uninterrupted elevated corridor running through the palace roof trusses all the way to the Minorite monastery in the Latrán district.

Today, the bridge marks the primary transition from the medieval Upper Castle to the Baroque theatre and garden grounds. The open terrace provides panoramic views across the Vltava River and Český Krumlov's historic center. Along the parapet stand replicas of four 1747 Baroque statues sculpted by Jan Antonín Zinner, portraying Saint Anthony of Padua, Saint Felix of Cantalice, Saint John of Nepomuk, and Saint Wenceslas. While the open walkway remains a public pedestrian route, the enclosed upper corridors are accessible only via guided interior castle tours.