Downtown Seattle is short on blocks and long on hills, so the route below runs from Seattle Center south to the market and the waterfront, then back up to Chinatown and a hilltop viewpoint. Budget five to six hours of walking, including stops, or split it over two mornings if you like long lunches.
Space Needle
The view from the top takes in the skyline, Mount Rainier, and Puget Sound in one sweep, which is why it earns the first hour of the day rather than the last. Go up early and let the rest of the route run downhill from here. It is an optional add-on on the Seattle City day tour, and the price sits in the table below.

Chihuly Glass Garden
Chihuly sits on the same Seattle Center grounds, which makes the pairing efficient: an hour or two covers the glass houses and the garden at a normal pace. It is a second optional add-on on the same guided day, so one Seattle Center morning covers both this and the Space Needle.
Pike Place Market
From Seattle Center, it is a downhill walk or a short ride to Pike Place Market, a working marketplace of fresh seafood, local produce and crafts rather than a museum set. Give it two or three hours, arrive hungry, and watch for the fish tossing near the front stalls. Entry is free, so the budget here is lunch plus whatever you carry home.
The Waterfront and the Great Wheel
The market steps down to the waterfront, where the Seattle Great Wheel turns at Pier 57 on the harbor; the wheel has turned here since June 2012. Dusk is the best time to ride, because the water and the city lights come together in one pass. Allow an hour for the pier and the climb back up.
Chinatown and Kerry Park
Chinatown deserves a proper stop rather than a drive-by: noodle shops, sushi and dim sum restaurants, karaoke bars and markets selling imported goods fill the blocks, and the neighborhood doubles as one of the downtown pick-up points for the group day tours. Kerry Park is the evening finish on Queen Anne, where the Space Needle and Mount Rainier line up in one frame after dark.