REMOVE

1. landscape architecture

WHAT

1. architecture (object genr … (1)
2. parks (recreation areas) (1)

WHERE

1. New York (state) (1)
2. New York, New York (1)

WHO

1. Olmsted, Frederick Law , … (1)
2. Vaux, Calvert (1)

WHEN

1. 19th century (1)