The underground complex was formed by the merging of independent, private cellars belonging to individual townhouses.
The tunnels were reinforced in the 1960s using reinforced concrete to prevent the collapse of the Old Town's historical buildings.
Due to the soil composition and age, these tunnels were prone to sinkholes that once threatened the structural integrity of the town square.
The network features various levels, some of which reach up to 30 meters deep beneath the current street surface.
Excavation was often performed manually through sandstone and clay, reflecting the specific geological conditions of the Kłodzko Valley.
The Kłodzko Subterranean Tourist Route consists of a multi-level system of 13th- to 17th-century cellars and tunnels excavated beneath the Old Town. These passages were originally created by townspeople for storage, brewing, and protection during sieges. The route covers approximately 600 meters of connected corridors beneath buildings on Czeska, Tumski, and Armii Krajowej streets. Structural stabilization work in the 20th century preserved the site after years of subsidence caused by improper historical maintenance. The tunnels maintain a constant temperature throughout the year, independent of external weather conditions. Visitors follow a designated path that showcases preserved architectural elements and remnants of historical subterranean infrastructure. This site serves as a vital record of medieval urban development and defense strategies in the Lower Silesian region.
The arched brick intersections within the main tunnel loop provide the most dramatic lighting and perspective.
Wear a jacket even in summer, as the temperature inside remains consistently cool.
Opt for comfortable, flat, non-slip footwear as the ground can be uneven or damp.
Follow the guided path strictly, as the ventilation and safety systems are calibrated for the designated tourist route.
Attempting to explore non-designated areas or side tunnels, which are often unstable or lack proper lighting.
Operating schedules may vary significantly during winter months; check for mid-week closures during the off-season.
Maintain a quiet volume; do not touch the historic walls; stay within the marked path.
