The Garden Conservancy is a wonderful organization dedicated to preserving special gardens. The have "Open Days" where people can visit private gardens for a small donation ($5).
ttp://www.gardenconservancy.org/ The Open Days are in many areas of the country. Some gardens are just lovely while others are spectacular. Check out those near you.
Today I was lucky enough to visit two gardens in the Riverdale section of he Bronx, with both my sons. That's the same Bronx of South Bronx, and Fort Apache infamy. But what a world of difference. The first garden was full of wonderful perennials, a two story tree house and a whimsical tire horse swing. The second garden was more spectacular in terms of topography since there was an old stone quarry on the property. The plantings themselves, while interesting , were not as pleasing to me. Both homes overlook the Hudson River and are right near Wave Hill. Wave Hill is a public garden where famous people such as Mark Twain, Toscanini and Theodore Roosevelt lived at one time. Well at different times really : )
The second garden