REMOVE

1. sidewalks
2. branches (plant components)
3. trees
4. sky
5. automobiles
6. public sculpture

WHAT

1. Visual Works (hierarchy n … (1)
2. buildings (structures) (1)
3. bushes (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

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