From 1797 onwards, when the French took it, it frequently appears in history as an important fortress.

He regarded Knaresborough as an important northern fortress and spent £1,290 on improvements to the castle.

Archaeological researches state that Drutsk has been an important military fortress for some period of time.

It was the most important Norwegian fortress in this area.

This important fortress became a prison from the end of the 18th century and was used until 1897.

Wushabao was one of the largest and most important fortresses at the time.

I have been looking at that important fortress, the outermost part of the defensive chain, with some people walking about in front of it.

In 1263 it was already an important fortress, being the head of a municipality, with large privileges.

It is the site of an important fortress with beginnings dating to the Christian Period.

It was his business to secure the important southern fortress of Kristianstad.