One of the most prominent homes in Vacaville, California, the Buck Mansion (1891) was the home of the Buck family and the Frank H. and Eva B. Buck Foundation for 125 years.

The family included California State Senator Leonard W. Buck; the first mayor of Vacaville, Frank H. Buck; U.S. Congressman Frank H. Buck Jr, and Dr. Leonard W. Buck.

Frank H. Buck, who was a fruit grower in addition to mayor, built the house and lived here with his wife, Annie, and their two children. Family continued living here after their deaths.

Dr. Leonard Buck inherited the home in the 1920s, renovating it and the gardens in the 1930s. This is when the brick exterior and surrounding brick walls were added.

The entire estate is set on 1.34 acres with three main buildings. The mansion itself; a guest cottage; and an event center. Between them, there are eight bedrooms, 11 bathrooms and more than 15,000 square feet of space.