Columbia subject headings:
City planning--Spain--Madrid.
Landscape architecture--Spain--Madrid.
Madrid (Spain)--Buildings, structures, etc.
MadridRío (Project)
Harvard subject headings:
City planning--Spain--Madrid
Landscape architecture--Spain--Madrid.
Madrid (Spain)--Buildings, structures, etc.
MadridRío (Project)
Urban beautification--Spain--Madrid.
Princeton subject headings: