Vikingsholm is a 38-room mansion on the shore of Emerald Bay at Lake Tahoe, in El Dorado County, California, U.S., and on the National Register of Historic Places.
The Vikingsholm foundation was laid in 1928, but the building was constructed in 1929 by 200 workers. Vikingsholm was built by Mrs. Lora Josephine Knight as a summer home. Some parts of the structure contain no nails or spikes, as a result of old-fashioned construction methods. Most of the building was made from materials found at Lake Tahoe.
Mrs. Knight is primarily known for building Vikingsholm, but she and her husband were primary backers of Charles Lindbergh's non-stop solo flight across the Atlantic in 1927.
Vikingsholm, along with the "Tea House" on Fannette Island and Emerald Bay, is a part of Emerald Bay State Park. Emerald Bay has also been declared a National Natural Landmark. Tours are given of the American Craftsman Vikingsholm museum home for a nominal fee.
