Columbia subject headings:
Harvard subject headings:
Architecture--Italy--Puglia.
Frederick II, Holy Roman Emperor, 1194-1250--Homes and haunts--Italy--Puglia.
Hohenstaufen, House of.
Puglia (Italy)--Buildings, structures, etc.
Swabians--Italy--Puglia.
Princeton subject headings:
Architecture--Italy--Puglia.
Puglia (Italy)--Buildings, structures, etc.
Swabians--Italy--Puglia.