Jezeří Castle and the ruins of the mausoleum, the Devil's Chapel

We are still moving in the foothills of the northern part of the Ore Mountains, where we like it very much. We still have a little time, so we detour to Jezeří Castle, which we have heard a lot about, but haven't seen yet. Although it's Monday, we can't get inside, but we don't even know if it's open to the public. Hopefully we can at least see him from the castle park. However, we had no idea that we would find another interesting ruin there...