Well, Aiea is one of the best all-vowel examples. I found some of the locations but others were too obscure, assuming they actually exist, and I couldn’t locate them in any of the standard online mapping services. However, I’ve not seen anyone attempt to confirm and map the alleged geographic locations so perhaps I can add some value to this pursuit.

It’s impossible to uncover the original source. The lists all seem to steal liberally from each other. Others are proper names including various geographic locations, and of course those are the ones that interest me. They may qualify from a technical sense but they feel a bit dubious to me. Many of the more remarkable words rarely appear in normal conversations. They’re somewhat amusing but they do tend to stretch towards the bizarre. It doesn’t take much to entertain me but you already knew that. They cover a thousand different topics but some of them focus on words of unnatural length composed solely of vowels. I come across various language trivia lists on the Intertubes all the time.

What are all the vowels