TKCP finds lots of hauntings in the maze of the Pike Place Market and in the Victorian Walker Ames House. 

Sources:
https://www.legendsofamerica.com/wa-pikemarket/
http://hauntedhouses.com/washington/pike-place-market/
https://random-times.com/2019/08/12/history-haunting-and-secrets-of-seattles-pike-place-market/
https://www.seattletimes.com/seattle-news/special-reports/ghost-stories-haunt-pike-place-market/