A view of Seattle’s Post Alley at Night. If you look closely, you can see a dark and mysterious figure quietly passing over the brick-laden walkway below the neon sign. Post Alley was named after Seattle’s first Post Office, and its first large government building, which covered an entire city block. Today the Alley is largely a tourist attraction, with its famous gum wall, and access to the equally famous Pike Place Market on its north end.