The family lived in Pittsburgh until 1905, when Frick moved his family to New York for business. However, they never sold their Pennsylvania home and it remained in the family. Although she lived most of her life in New York, Helen often returned to her childhood home at Clayton, and in 1970 she built The Frick Art Museum at the mansion so that she could share her collected art with the Pittsburgh public. Then, in 1981, Helen moved back to the Clayton permanently until her death in 1984.
The museum continued to grow even after its founder had passed away, however, and in 1994, it opened a café where visitors could enjoy lunch. In 1997, the carriage house on the Frick property, which housed the family’s cars and carriages, expanded and created the Car and Carriage Museum, highlighting Pittsburgh and its role in the history of automobiles.
The Frick's 100,000 visitors per year still flock to see the art at the Frick Art Museum by Renaissance and Baroque artists such as Peter Paul Rubens, Jean-Louis de Marne, and Jan Steen, as well as the historical cars, such as a 1914 Ford Model T, a 1914 Rolls Royce Silver Ghost, and a 1931 Lincoln Model K Phaeton, within the Car and Carriage Museum.