Washington’s Tacoma Art Museum broke ground Thursday, September 5, 2013 on a $15.5 million expansion that will include new galleries. The 16,000-square-foot wing will house 280 works of Western art donated to the museum by German billionaires Erivan and Helga Haub. The collection, which ranks as one of the finest groupings of Western American art in the world, was accompanied by a $20 million gift from the Haubs.

The Tacoma Art Museum’s expansion, which is helmed by the Seattle-based architect Tom Kundig of Olson Kundig Architects, is slated to reach completion by fall 2014. The institution will boast the most significant public holding of Western artworks in the Pacific Northwest. The Haubs’ bequest includes landscapes by Albert Bierstadt and Thomas Moran, sculptures by Frederic Remington and works by modernist painters including Georgia O’Keeffe. The pieces range from the 1820s to the present and span various Western art genres.