Columbia subject headings:
Horta, Victor, baron, 1861-1947.
Harvard subject headings:
Architects--Belgium.
Architecture--Belgium--19th century.
Architecture--Belgium--20th century.
Art nouveau (Architecture)--Bellgium.
Horta, Victor, baron, 1861-1947--Criticism and interpretation.
Princeton subject headings:
Architecture, Domestic--Belgium--Brussels.
Art deco (Architecture)--Belgium--Brussels.
Brussels (Belgium)--Buildings, structures, etc.
Horta, Victor, baron, 1861-1947.