As one of the most recognizable landmarks in the world, the Space Needle is considered a Seattle icon. Built for the 1962 World’s Fair, its 520-foot saucer-shaped top house offers visitors 360-degree panoramic views of Seattle’s downtown. One of the top things to do in Washington, you can step outside to experience the Space Needle’s floor-to-ceiling glass observation deck for souvenir snaps of the postcard-worthy skyline views. Lean into the views from the glass benches or visit The Loupe, the world’s first and only rotating glass floor.