Columbia subject headings:
Architecture--Wales--West Glamorgan--History--18th century.
Conservatories--Wales--West Glamorgan.
Greenhouses--Wales--West Glamorgan.
Margam Orangery.
Orangeries--Wales--West Glamorgan.
West Glamorgan (Wales)--Buildings, structures, etc.
Harvard subject headings:
Margam Orangery.
Princeton subject headings: