Spring house input

This seems like the most appropriate forum for this, but I'm not super sure! We have been in our property for a year, and it includes an old masonry spring house. The spring house is certainly much older than the house itself, which is from the 1950s.

It's a seepage spring, not active flowing, but it has standing water and fills actively from the seeping walls when it rains. It's unclear whether it has any inlet beyond seepage, but I don't think so. It has an outflow pipe that drains (slowly) underground out towards the small catchment pond, which is artificial and just a dug out pond a few feet below the usual water table (and the pond then has an overflow pipe that drains into a dry creek bed downstream). The spring house used to also house the well for the house's drinking water, but everything (spring house, pond) went dry in a drought about 25 years ago, and the house was put on municipal water, so the well is no longer used (though the aboveground hardware is still at least partly present in the spring house channel).

The roof of the spring house is also clearly very new, but the walls themselves... not so much. There is a fair amount of crumbling of the masonry and damage, both inside, and outside where it's aboveground, especially at the corners and the tops of the walls. We plan to look into repairs, and they will probably be substantial and complicated.

The question really is... what should we do with it?? It's extremely cool and we love it! But we do have modern refrigeration. Maybe someday, when we're more established, we'll experiment with making cheese, and it might be good for that, but we're not there yet. Last year we also had such a severe local drought that it all went dry again, so I guess we can't completely rely on it. It is also a big enough structure that the temperature inside is actually not well regulated except down in the water (which is where you would store dairy, so okay, but ideally the rest of a spring house structure can serve as cold but not frozen storage). We could try to insulate it better (and maybe keep out critters! Right now it's fully open under the eaves so small animals can come right in and nest in there). But at the moment, it doesn't really work as a root cellar: the air does get below freezing in cold winter temperatures, and it gets hot in the summer, with such a high ceiling and rafters. I'd love suggestions and ideas for what to do with such a cool piece of our property!! Thanks!!