When my cousin Hannah visited a few weeks ago, we spent several days in Bilbao and a day and a half in Santander. I had intended to write about both but as you know, have not. Phil, however, did write about it on his blog so you can still check out our pictures and read all about it! Check it out!
https://waypastcool.org/2021/08/07/spain-travels-trip-1-bilbao/
https://waypastcool.org/2021/08/11/spain-travels-trip-1-5-santander/