REMOVE

1. portraits
2. stairs
3. coats (garments)
4. public sculpture
5. 1964

WHAT

1. Visual Works (hierarchy n … (1)
2. arcades (structural assem … (1)
3. artists (visual artists) (1)
4. barriers (1)
5. benches (furniture) (1)

More 

WHERE

1. New York, New York (1)

WHEN

1. ca. 1964 (1)