'The Most Beautiful Elizabeth'

ELIZABETH Castle is sited on a tidal island outside St Helier harbour, Jersey.
Begun in 1594, it was named Fort Isabella Bellissima in honour of Elizabeth I by Sir Walter Raleigh, who was governor of Jersey from 1600-03.

Fort Isabella Bellissima … now known by the more prosaic name Elizabeth Castle

The fort first saw serious action in 1651 when it surrendered to Parliamentary forces after a seven-week siege.
It played a peripheral role in the 1781 Battle of Jersey http://timspanton.blogspot.com/2019/04/battle-of-jersey.html and was occupied by the Germans during WW2, but otherwise seems to have had rather a peaceful existence for a military installation.