The Weckbaugh Mansion is a house in Denver, Colorado, United States. It was designed by Denver architect Jacques Benedict, constructed during the Great Depression in 1930 and finished in 1933. Initially intended to be much larger, the mansion was finished with seven bedrooms and eight bathrooms. Public records list the mansion at 9,366 square feet on two levels. However the mansion has an upper third floor only accessible through the elevator reaching all floors. This upper floor is a single room used for star gazing. John Kernan Mullen, a prominent Denver philanthropist and businessman built the mansion for Ella Mullen Weckbaugh. Located on Cedar Avenue on the south side of the Denver Country Club overlooking Cherry Creek, this historic Weckbaugh Mansion is an example of the French Chateau Style and sits in grounds of 1.7 acres.
Italian marble was used extensively in the construction of the Weckbaugh Mansion especially throughout the main entry hall and throughout the several fireplaces in the home. Ella Mullen Weckbaugh died in 1977 in her 70s. The Historic Weckbaugh Mansion has remained privately owned since her death.