The Kam Wah Chung & Co. Museum, also known as Kam Wah Chung Company Building, is a state park and a National Historic Landmark that preserves early Chinese culture in John Day in the U.S. state of Oregon.

[2] Built in the 1865 by George Hazeltine as a supply depot or stagecoach stop along the Dalles-Canyon City wagon road.,[3] it is the best-preserved example of a Chinese herbal apothecary and mercantile establishment dating to the post-Civil War period of growth in the Western United States.

[4] The Kam Wah Chung (Chinese: 金華昌; Jyutping: gam1 waa4 coeng1)[5] Company Building was built along a wagon road later known as The Dalles Military Road, possibly as a trading post serving placer mining operations on Canyon Creek.

the Kam Wah Chung & Co. Museum contains one of the most extensive collections of materials from the century-long influx of Chinese immigrants in the American West.

[2][4] The museum received particular attention from Oregon First Lady Mary Oberst, wife of Governor Ted Kulongoski, who helped raise $1.5 million in private funds to renovate the building into a state park.