The first week of August in Seattle has the highest probability in the year for decent weather. These days are also the time when the Seafair community celebration peaks with hydroplane boat races and airshows. The I-90 floating bridge is closed to traffic during the Blue Angel's shows, and watchers walk out to have closeup views of the airplanes. In the past, they have practiced on Friday and had a show on Saturday and one on Sunday. Be prepared to walk a mile or so to reach a viewpoint or the bridge to be able to see the show. Photographers, bring your zoom or telephoto and use that sports action shooting mode. And, last, let me express our thanks to the Blue Angels for coming each year. What a great show.
Seattle is Sandwhiched by the Puget Sound, Lake Union and Lake Washington so Seattle Natives are really drawn to water and water sports and water activities so Lake washington is itself an attraction in Seattle due to its many water activities for sailing, fishing, water sports and others. It is here that Bill Gates has his home near the Shoreline so this is the area for very rich people like Sausalito in the bay area.
The Chittenden Locks on Lake Washington are a fine place to be on a nice day. Watch the boats go through the canal and take in the atmosphere. Another nice place to visit is the "fish ladder" that allows the salmon to continue to move upstream despite the existence of a major shipping lane. The fish ladder, designed by the Army Corps of Engineers, also has an extensive viewing area to allow you to look at salmon before they "hit the stairs." There's also a vantage point above the fish stairs so you can view the salmon working their way upstream from above. Admission is free, but parking isn't.
Seattle has so much water! And not just falling from the sky : ) If you know someone with a boat, it's a great way to see the sites on Lake Washington. There are site-seeing cruises available, too. You can see Bill Gate's "old" house, complete with a man-made sand beach, and many many beautiful houses. Sometimes there are parasailers, and, on a clear day, you can get a glorious view of Mt. Rainier to the south, and a peek-a-boo view of Mt. Baker to the north.
Technically this is a floating bridge over Lake Washington.... but it's doubtful you'll feel any swaying.. I mean, these are major expressways crossing over the lake. At any rate, it's the longest floating bridge in the world, which is pretty neat.
One of the beauties of Seattle is the water. Lake Washington is a spectacular lake surrounded by beautiful homes. Loads of parks to stroll or rollerblade along the lakeshore. (If you look closely at the photo you can spot the majestic Mt. Rainier)
As you drive along I90 or 520 across Lake Washington, you will probably notice many of the lovely lakeside mansions on Lake Washington. One of them, at Medina, belongs to Bill Gates.