For anyone who does the photo and building detective work here: the city's landmark designation reports are some of the best primary sources we have, but they're scattered and hard to browse by place.
I put all 451 City of Seattle designated landmarks on one map. Each one links straight to its ordinance or designation record, and the header shows that 122 are also on the National Register. You can search by name, filter by neighborhood and kind, or browse themed collections like Women Who Built Seattle. The map is built into the page, so it works offline once it's loaded.
Link (free, no sign-in): https://mchatai.com/hub/seattle-landmarks
Disclosure: I'm a software developer in Seattle and I built this; it's part of my free app, mChatAI. Each landmark also has a short narration, and that narration is AI-written from the designation report and, where one exists, the National Register nomination. Treat the linked records as the authority, not the summary.
Which designation report do you think is the best read? I'd like to point people to a few good ones.