What Happens To Old Post Offices When They Close?

As fewer and fewer people use the mail to send letters and fewer and fewer companies send out actual physical mail, there are many actual Post Offices that close down, often, never to be replaced. I have personal knowledge of a few in neighborhoods that I have lived in, or currently live in, and a couple where I either worked or have family members that live nearby. One that is just around the corner from where I live now, was a small, sub-post office that operated out of the back of a drug store which closed a few years ago and is now a dental clinic. Another nearby sub office is now a convenience store. One where I used to work in Southeast London is now a florist shop, And one in a small village in South Wales where a niece and nephew live is closed and boarded up. This one closed some time between a visit in about 2012 when I was still able to buy a few Presentation Packs of current British stamps , and a subsequent visit in about 2019 when it had closed. Possibly the most famous one that I know of is immortalized in philatelic lore because it is actually mentioned in the Stanley Gibbons Great Britain Concise Catalogue. It was where, in 1935, three of four sheets of the 2 1/2 d blue Silver Jubilee commemorative stamps, accidentally printed in Prussian blue were sold to lucky purchasers. Stanley Gibbons gives the address of the Post Office as 134 Fore Street, Upper Edmonton, in North London. According to Google Maps, the location is now a Maxmo fried chicken takeout. I wonder if other members of the forum have their own examples.