Columbia subject headings:
Architecture, Spanish colonial--Cuba--Havana.
Doors--Cuba--Havana.
Doorways--Cuba--Havana.
Harvard subject headings:
Architecture, Spanish colonial--Cuba--Havana.
Doors--Cuba--Havana.
Doorways--Cuba--Havana.
Princeton subject headings:
Architecture, Colonial--Cuba--Havana.
Decoration and ornament, Architectural--Cuba--Havana.
Doorways--Cuba--Havana.