Memorial parks like Forest Home Cemetery in Milwaukee, Wisconsin, are historic landmarks. The heritage flower gardens at this public place are worth a visit.
Grandmother's Garden: The Old Fashioned American Garden 1865 - 1915 by May Brawley Hill leads a historical journey following the evolution of American Gardens.
The Kingwood Center is worth a trip to the mid-western state of Ohio. This Mansfield estate is filled with heritage and display gardens, greenhouses and an orangery.