Archaeological research in 1960–61 clarified a number of things but raised even more questions. Only part of the grounds inside the moat was examined. Whether the unexamined part also holds tower foundations, we can only guess.
What is certain is that in the 13th century a sturdy tower house with a moat stood here. By the 15th century that tower had gone and at least two towers had been built, one of which served as a gate tower – the tower that still stands today.