In the 1800's the Engineers Castle, originally named Mikhail Castle to honor the Archangel Mikhail, was built as a place of residence by Paul I. The residence was specifically built as a fortress to protect Paul I from any attempts of assassin on his life, as he realised that he was in a dangerous position with his hold on power waining. The castles' construction was based on a medieval model with secret passages and rooms as well as a moat made up of four canals and a drawbridge, which helped outwitted his enemies for a time. However, it was just a matter of time before the castle could not protect Paul I anymore and eventually after forty days after having moved in Paul I was murdered in his sleep.
