Columbia subject headings:
Cities and towns, Renaissance.
City planning--History--15th century.
Utopias.
Visionary architecture.
Harvard subject headings:
Filarete, approximately 1400-approximately 1469.
Francesco Sforza, Duke of Milan, 1401-1466.
Utopias in art.
Visionary architecture--Italy--15th century.
Princeton subject headings:
Cities and towns, Renaissance.
City planning--History--15th century.
Utopias.
Visionary architecture.