Completed in 1903, the Overholser Mansion offers a glimpse into the life of Henry Overholser, a key figure in Oklahoma City’s development. This French chateau-style home features original furnishings, stained glass, and ornate painted walls, reflecting the elegance of the early twentieth century. Overholser purchased land north of the city in 1901, with architect W. S. Matthews overseeing construction. Luxurious details include Brussels lace curtains, English carpets, and French stained-glass windows. Since its 1904 opening, it has hosted cultural figures like opera singers Ernestine Schumann-Heink and Amelita Galli-Curci. From 1956 to 1968, it was the residence of U.S. Senator Mike Monroney.

The Oklahoma Historical Society acquired Overholser Mansion in 1972, supported by the Oklahoma Chapter of the American Institute of Architects. The home was added to the National Register of Historic Places in 1970 and is currently managed by Preservation Oklahoma, Inc.