REMOVE

1. bushes
2. houses
3. buildings (structures)
4. sky
5. public sculpture
6. sidewalks

WHAT

1. Visual Works (hierarchy n … (1)
2. automobiles (1)
3. branches (plant component … (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1966 (1)
2. after 1966 (1)