Though not as astonishingly aged, the Brewery Gulch Inn in Mendcino, Ca. is paneled with lumber from 'sinker logs' that were lodged in the silt of the nearby Big River for ~150 years. The mineralization has created color variations otherwise not naturally seen [0][1].

[0] https://www.brewerygulchinn.com/the-history-of-the-inn

[1] https://media.expedia.com/hotels/1000000/900000/894100/89401...