The closest White Castle to me here in Portland OR is Las Vegas.
You might find their vile gut-bombs fine cuisine is available frozen at your local grocery store. Might.
I’ve told this story before but it’s a good one. I did not grow up in the land of White Castle, but moved there in my mid 30s. I did not see the charm in the place or the product. Most of my new friends there were lifetime locals, so grew up with the stuff and raved about it, at least as drunk food.
One time one young woman known as a bit of a foodie brought what she labeled Paté Maison Blanche to a party. Everyone loved it and wanted the recipe. I thought it was less than meh.
The recipe you ask? Get a box of however many White Castle sliders, dump the whole thing, buns and all, into a food processor, then process at high speed until smooth. Dump the results into a shallow serving dish and chill until firm. Done.
Surprisingly nobody got the joke in the name. Lots of 
at the reveal.
A recipe that made the rounds sometime in the mid 80s was a Thanksgiving stuffing made of White Castles. My grandmother made it at least once and I recall it being really quite good, Although I’m pretty confident that the recipe involved spicing the whole thing up as a traditional stuffing would be.
It was a hit with my family both in that way that ann ironic, joking recipe can seem like a fun time once, and in the way that we all like White Castle hamburgers anyway. But it wasn’t enough of a hit to ever make an appearance again. Next year traditional stuffing returned to the menu.
I’ve stopped at ones in Kentucky when I go out to my MIL’s house. I actually prefer the frozen ones to the fresh ones. Having only ever had the frozen ones for years, the fresh ones taste odd to me. Not bad, just… incorrect. And I really dislike crinkle-cut fries.
I think I’ve still never eaten at White Castle, though when I was a kid we saw commercials for it, including one decades-old in which people who had moved to Arizona arranged for a truck delivery of a large quantity of them. We wondered at what was so special that people would go to such lengths for the food.
Mine has both as well but onion rings are always a wait, so I haven’t bothered in years. I almost never went there in Chicago, but here in KY they’re right around the corner from me and the only option after 10 p.m. in you don’t want to take the interstate somewhere. Not only is everything around hear closed after 10, people think you’re weird for thinking anything should be open. Gas, medicine, takeout, why would you need those? If they could turn off the ATMs they would.
I wonder if the OP survived eating whatever it was he got from wherever he got it? It’s almost 48 hours since he posted and he’s still absent. 
Are White Castle onion rings any good? In my experience fast-food rings are pretty mediocre (unless they make their own, which is kind of rare)
That sure was our impression when I was under 30. There was one on the corner of Belmont and Harlem in Chicago that seemed to be on our way home from EVERYWHERE! I remember joking that WC hired the ugliest people around, but I imagine that working the graveyard shift under bright flourescents in a white tile box wouldn’t help anyone’s appearance.
Sure it wasn’t a Krystal?
That kinda correlates with what someone upthread said – White Castle burgers tasted of liver to them.
I’ve never been able to eat White Castle because I can’t digest onions.
But I’ll point out that you can buy sliders in the frozen foods section of grocery stores now. You can get them with or without cheese.
Both my wife and daughter are fans and I’ve bought and prepared them many times over the years, though it has been a while since either showed interest. There is no actual White Castle restaurant anywhere near here (Seattle area).
When I was a kid, and I’d go back east to my mom’s family in Columbus, OH, they’d sometimes order White Castle. I couldn’t eat them back then either though. (Well, I mean, I could, but then I’d get really sick the next day.)
My mom’s family is also (mainly) in Columbus OH. I think when I was in my teens some of my cousins mentioned WC, but I had no interest. I’ve still never eaten one.
Their interactive map suggest you can summarize their geography as “Minneapolis, St. Louis, Chicago, Indianapolis, Columbus, and Louisville. And oh yeah, two in Nashville.” With a few more in the out-counties near each of those metro areas.
And one in Las Vegas for tourists to try.
When I moved to St. Louis in 1994 I had never even heard of White Castle. Definitely big where it exists, but that’s not much of the country. Now of course with the internet, most of us have heard of, or seen vid of, a lot more than we can have experienced IRL.
I’m really confused and hope the OP comes back to update. I’ve been eating White Castles since I was a kid in the 80s, and, hell, sometimes I pick up 3 jalapeno cheese sliders for breakfast after I drop off my kid at school, although their breakfast menu is surprisingly excellent, as well. So I’m there at least once a month. A few years back, I used to get the sausage egg sandwich on a White Castle roll pretty much once a week. These days, I crave the sliders. They taste and look exactly how I remember them from the 80s. Little has changed except they’ve added to the menu and there are occasional limited time specialty items (it’s garlic cheese sliders currently. They’re meh. I can barely tell they have garlic in them.)
When my daughter lived in Vegas she noted that there was at least one of every fast food joint in America there. And most with outposts in the airport. A lot of the airport is not a lot of gates with a few food places scattered in, but a lot of fast food places with a lot of gates scattered in. Changing terminals takes forever!
My WAG is Lord Culver is the master now at that location.
That particular White Castle is where I changed busses on my way home from high school. At the time you could get two burgers for a quarter, and when I had money left over from buying books I would pick up a couple to hold me over until dinner time.
Elston and Addison was mine.
I have never been to a White Castle. There has literally never been one anywhere near where I’ve lived, and apparently if I’ve passed by one while travelling, it went unnoticed.
Now I want a slider, dammit.