[1] Now, together with an extensive network of tunnels, it is one of the biggest attractions of the town of Kłodzko, with its underground labyrinth and a repository of different objects, from old fire engines to local glassware.

[2] A stronghold on Kłodzko's Castle Hill was mentioned for the first time in the Chronicle of Bohemians, written by Cosmas of Prague.

Kłodzko itself is located along the strategic route between Wrocław and Prague, and its role as a trading point must have been significant since the early Middle Ages.

Finally, the Austrians brought in two large cannons - the Wingless Dragon and the Black Sow to fire upon the walls of Kłodzko and the city surrendered on October 25.

The city itself surrendered on January 14, but the fortress, with 2000 soldiers, held out until April 25, when starvation made further resistance impossible.

Major works continued during the Silesian Wars, until 1770, however, the fortress was not fully completed 200 years after the Austrians began to modernize it.

[6] in 1745 by Frederick II order at Kłodzko (then under the Germanized name Glatz) under the guard of Heinrich August de la Motte Fouqué was imprisoned a Prussian officer Friedrich von der Trenck.

[12] During World War II, the fortress housed a Nazi prison administered by the Reich Ministry of Justice and Wehrmacht.

[15] In 1941–1942, many prisoners were sent to forced labour in various locations, including Ludwikowice Kłodzkie, Sieradz, Kędzierzyn, Hlučín, Blechhammer, Wiener Neustadt, Döllersheim and Moosbierbaum, and in 1942–1943, six FStGA field penal battalions (1, 7, 10, 13, 16, 20) were established in there and afterwards relocated to the eastern front.