The Denver Art Museum announced on Monday, January 13 that it has received 22 Impressionist masterpieces by artists including Vincent van Gogh, Claude Monet, Paul Cezanne, Edouard Manet and Pierre-Auguste Renoir. It is the museum’s most significant gift  of paintings to date.

The donation comes from the collection of Frederic C. Hamilton, an oil and gas magnate who has been the museum’s chief benefactor for decades. In addition to European paintings, the gift includes works by American Impressionists such as Childe Hassam and William Merritt Chase.

The paintings, which elevate the Denver Art Museum’s collection of Impressionism into one of the finest in the American west, will go on view in the Frederic C. Hamilton Building, which opened in 2006. Hamilton led the fundraising effort for the $110 million expansion project that gave the museum an additional 146,000 square feet of gallery space.