The Island County Historical Society preserves and displays the history of Island County from the Ice Age to present day. There are 10,000 year old mammoth remains on display as well as early dugout canoes made by Native Americans and even the first car on Whidbey Island- a 1902 Holsman auto buggy.

The South Whidbey Historical Society Museum collects and shares the history and artifacts related to South Whidbey Island. In addition to the museum, the society operates many offsite historical buildings such as the McLeod Cabin and the Brooks Hill Log House, both at the Island County Fairgrounds along with some antique farm equipment as well.

The PBY Memorial Foundation is located on base and is dedicated to the PBY Catalina and Naval aviation history at NAS Whidbey Island. The museum displays all the Catalina seaplanes that were based at or left from Whidbey from 1942 through today, in addition to artifacts and dedications to all U.S. wars, a flight simulator, and more.

Imagine Children's Museum, in Everett, is a general children's museum with science, craft, art, and many other educational activities and events.

The Seattle area has a strong flight museum presence, and the Everett area has several of these museums, both public and private, including the Flying Heritage Collection, Historic Flight at KILO-7, and Future of Flight Aviation & Boeing Tour, all at or near Paine Field.

Puget Sound Museums - The greater Seattle Metro area has one of the highest densities of art and history museums in the US.

King County and the closer Seattle area has an even larger collection of museums. Many of these are science or technology museums. Briefly, these are the Boeing Museum of Flight, featuring aviation artifacts, and a large collection of aircraft and aerospace displays; the Museum of History and Industry, focusing on industry in Seattle; the Experience Music Project and Science Fiction Museum, exploring modern music (especially Seattle-area music) and three floors of science fiction exhibits; the Pacific Science Center, with three floors of science displays and demonstration, including a planetarium; and the Museum of Communications, focusing on telegraphs and telephones (you know, those things they used to talk in the 19th and 20th Centuries). The Burke Museum of Natural History is the only major natural history museum in the state.

The Museum of Glass in Tacoma, is focused on glass art, especially but not only the art of Dale Chihuly and his students. That being said, it collects glass art from around the world and has an eclectic collection. The museum features a hot shop, where visitors can watch glass art being created; the artistic may be interested in the museum's glass art education workshops for the artistic. After enjoying the museum, visitors can cross over busy streets into the heart of Tacoma via the Glass Bridge.

There are several military museums in the Puget Sound area, including the McChord Air Museum, on Joint Base Lewis McChord, features historic artifacts related to McChord especially, and military aviation in the Puget Sound area, and a collection of restored and preserved aircraft. The Lewis Army Museum, also on JBLM, is the only US Army museum on the West Coast. It features many artifacts from units historically assigned to Camp Lewis or Fort Lewis, including I Corps, the Medical Corps, and the 9th Infantry Division. Also on display are artifacts from enemies of various wars, alongside a collection of military vehicles and various disabled large weapons. The US Navy has two museums, the Puget Sound Navy Museum, and the Naval Undersea Museum, at separate locations in Kitsap County, on the other side of the Sound.

Cultural museums in the Seattle area include the Nordic Heritage Museum (the area was largely settled by Scandinavians in the 19th Century), Northwest African American Museum; and the Wing Luke Museum (looking at Chinese and other Asian cultures in Seattle).

The SPARK Museum of Electric Invention is in Bellingham, about an hour north, and features a great many displays and exhibits, and some demonstrations and the occasional show on the wonderful electric technology and electric history of the 19th and 20th Century. It'll charge your day.