fortress
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fortress
A large, heavily fortified military structure used to defend a place.
Die alte Festung über der Stadt ist heute eine beliebte Touristenattraktion.
The old fortress above the city is now a popular tourist attraction.
'Die Festung' (fortress) is derived from the adjective 'fest', which means 'stable' or 'solid'. The ending '-ung' turns it into a noun. A fortress is therefore literally a place that has been 'made firm'.
Die Mauern der Festung waren extrem dick und fest.
The walls of the fortress were extremely thick and solid.
The word belongs to the family of 'fest' (firm/solid) and the verb 'befestigen' (to fortify/attach). 'Befestigen' means to make something stable or to defend it. A 'Festung' is therefore a fortified place.
Die Soldaten befestigten das Lager für die Nacht.
The soldiers fortified the camp for the night.
In a military or historical context, 'Festung' (fortress) is often combined with certain verbs. Typical expressions are 'eine Festung erobern' (to capture a fortress), 'eine Festung belagern' (to besiege a fortress), or 'eine Festung verteidigen' (to defend a fortress).
Die Armee belagerte die Festung monatelang.
The army besieged the fortress for months.
You can recognize the figurative meaning from the context. If it is not about a historical building, but about business, politics, or personal boundaries, the metaphorical 'Festung' (fortress) is meant. One example is the term 'Festung Europa' (Fortress Europe).
Er hat eine emotionale Festung um sich errichtet, die niemand durchbrechen kann.
He has built an emotional fortress around himself that no one can break through.
castle / lock
'das Schloss' and 'die Festung' can both be large old buildings or complexes. The difference lies in their purpose. A 'Schloss' was mainly a representative residence for nobles or rulers. It was meant to be beautiful and impressive. A 'Festung', by contrast, was built for defense and war. It has strong walls and was meant to be difficult to capture. Learners may confuse the words because both are often historical places. When it is about living and representation, 'Schloss' fits; when it is about protection and military defense, 'Festung' fits.
Auf dem Berg steht eine alte Festung mit dicken Mauern.
There is an old fortress with thick walls on the mountain.
Im Sommer besuchen viele Touristen das Schloss mit seinem großen Garten.
In summer, many tourists visit the castle with its large garden.