Columbia subject headings:
Architecture, Medieval--Austria.
Architecture, Medieval--Europe.
Architecture, Medieval--Middle East.
Castles--Austria--History.
Castles--Europe--History.
Castles--Middle East--History.
Cathedrals--Austria--History.
Cathedrals--Europe--History.
Cathedrals--Middle East--History.
Christianity--Europe--History.
Orders of knighthood and chivalry--Austria--History.
Orders of knighthood and chivalry--Europe--History.
Orders of knighthood and chivalry--Middle East--History.
Templars--Austria--History.
Templars--Europe--History.
Templars--Middle East--History.
Harvard subject headings:
Architecture, Medieval--Austria.
Architecture, Medieval--Europe.
Architecture, Medieval--Middle East.
Castles--Austria--History.
Castles--Europe--History.
Castles--Middle East--History.
Cathedrals--Austria--History.
Cathedrals--Europe--History.
Cathedrals--Middle East--History.
Christianity--Europe--History.
Orders of knighthood and chivalry--Austria--History.
Orders of knighthood and chivalry--Europe--History.
Orders of knighthood and chivalry--Middle East--History.
Templars--Austria--History.
Templars--Europe--History.
Templars--Middle East--History.
Princeton subject headings: