text: Should http://www.openstreetmap.org/way/424807630 http://www.openstreetmap.org/way/424745130 and http://www.openstreetmap.org/way/424807629 be also tagged as buildings?  If so, I'd add a "building=yes" tag to them.
  I'm not sure why historic=castle isn't shown on the "standard" map layer - it seems a bit of an omission to be honest.