Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Castle of the Teutonic Order in Malbork' has mentioned 'Fortress' in the following places:
Occurrence Sentence Text Source
The Castle of the Teutonic Order in Malbork[1] (Polish: Zamek w Malborku; German: Ordensburg Marienburg) is a 13th-century Teutonic castle and fortress located near the town of Malbork, Poland.
It was originally constructed by the Teutonic Knights, a German Catholic religious order of crusaders, in a form of an Ordensburg fortress.
The castle is a classic example of a medieval fortress and, on its completion in 1406, was the world's largest brick castle.
The Grand Master of the Teutonic Knights, Siegfried von Feuchtwangen, who arrived in Marienburg from Venice, undertook the next phase of the fortress' construction.
This spectacular fortress bears witness to the phenomenon of the Teutonic Order state in Prussia.
Sustaining the Outstanding Universal Value, authenticity, and integrity of the property over time requires continuing the policies of conservation implemented at the Malbork castle complex since the mid-19th century in order to preserve the spatial and functional layout of the fortress, its panoramas, and the historic architectural features of the castle.