Seattle’s new Waterfront Park has transformed the city’s downtown core, connecting neighborhoods to water, businesses to parkland and people to the city.

The Wizard of Oz mural in Humboldt Park, the Haymarket Memorial downtown and the Buddha heads in Lincoln Park are among the works that readers called out in a diverse list.

For years, David Thomas Circle had a Wendy’s smack dab in the middle of it that exacerbated traffic. Now, 1-acre of roadway ...