Frederick Law Olmsted (1822-1903), the father of American landscape architecture, may have more to do with the way America looks than anyone else. Beginning in 1857 with the design of Central Park in New York City, he created designs for thousands of landscapes, including many of the world’s most important parks.

His works include Prospect Park in Brooklyn, Boston’s Emerald Necklace, Biltmore Estate in North Carolina, Mount Royal in Montreal, the grounds of the U.S. Capitol and the White House, and Washington Park, Jackson Park and the World’s Columbian Exposition of 1893 in Chicago. (The last of those documented excellently in Erik Larson’s book The Devil in the White City.) Plus, many of the green spaces that define towns and cities across the country are influenced by Olmsted.

Below, ten lessons from Olmsted’s approach:

1) Respect “the genius of a place.”

Olmsted wanted his designs to stay true to the character of their natural surroundings. He referred to “the genius of a place,” a belief that every site has ecologically and spiritually unique qualities. The goal was to “access this genius” and let it infuse all design decisions.

This meant taking advantage of unique characteristics of a site while also acknowledging disadvantages. For example, he was willing to abandon the rainfall-requiring scenery he loved most for landscapes more appropriate to climates he worked in. That meant a separate landscape style for the South while in the dryer, western parts of the country he used a water-conserving style (seen most visibly on the campus of Stanford University, design shown at right).

2) Subordinate details to the whole.

Olmsted felt that what separated his work from a gardener was “the elegance of design,” (i.e. one should subordinate all elements to the overall design and the effect it is intended to achieve). There was no room for details that were to be viewed as individual elements. He warned against thinking “of trees, of turf, water, rocks, bridges, as things of beauty in themselves.” In his work, they were threads in a larger fabric. That’s why he avoided decorative plantings and structures in favor of a landscapes that appeared organic and true.

3) The art is to conceal art.

Olmsted believed the goal wasn’t to make viewers see his work. It was to make them unaware of it. To him, the art was to conceal art. And the way to do this was to remove distractions and demands on the conscious mind. Viewers weren’t supposed to examine or analyze parts of the scene. They were supposed to be unaware of everything that was working.

He tried to recreate the beauty he saw in the Isle of Wight during his first trip to England in 1850: “Gradually and silently the charm comes over us; we know not exactly where or how.” Olmsted’s works appear so natural that one critic wrote, “One thinks of them as something not put there by artifice but merely preserved by happenstance.”