I’ve set the objective to drastically increase the number of palaces and loci I have. For starters, I want to build one new palace per week.
I’m curious what’s the empirical ceiling of what others have achieved, and what I can manage.
Currently I have 26 palaces / loci routes with a total of 729 loci.
What about you? 
I have way less palaces, but they seem to be way bigger: 12 palaces and 817 loci. Currently expanding some and looking to create a new one. Your palaces average 28 loci. Mine 68.
My longest has 152 loci (and expanding) and the shortest 19 (a house I visited to buy but discarded, so no expandable).
I have over 10,000 loci and i highly suggest you practice shrinking and growing into nested environments.
Loci can be within loci.
Build hierarchy and ontology. Be specific.
I have a paths area where I “drop” unlocalized content so it has a “place”. If i need to retrieve a chain of images from the paths it comes unlocalized.
This is an advanced tool. And the path is long.
Good luck
Only two.
One has 26 loci because it’s my alphabet MP (I didn’t know the alphabet in order so I created it).
The other has only 7 loci, it’s for the order of sharps and flats (F-C-G-D-A-E-B).
As I mentioned, they both were made with a purpose but I can use them to memorize whatever because that purpose is already satisfied by the loci (in every loci I have a character that interacts with whatever I wish to memorize, that character represents the initial purpose of the palace).
I’m only able to seriously create them when I have a specific reason. I do find what I have enough to memorize whatever I need in the moment though, but I’m thinking about creating a third one to store the months of the year, with the aim of being able to tell which day corresponds to any date of the year. I’ve been playing some videogames with great environments (like Baldur’s Gate 3) so I’ve been thinking about trying to turn those areas into MP’s for fun but because I don’t have a purpose for them yet I doubt they’ll stick.
Tbh I don’t even know what I’d do with hundreds of loci. The palace I use the most to memorize things is the alphabet one, and I almost never use it fully.
Cool, very interesting to see those spreads/differences
I used to have some bigger ones as well, but then started to split them up as it became more difficult for me to manage those. But that’s a long time ago and I’m curious to try out again building larger ones like you did! Will give it a shot.
That’s a cool thing you pointed out there. My big ones are split as well. But they are part of the same macropalace. One of the biggest, for example, is in a city in France I lived in for a year. I start at the house and then go around the city. But I start IN the house. That house itself has around thirty loci. In fact, I regularly use that for names in Memory League, where I only need thirty loci. The rest of the city is part of the palace, but I don’t leave the house when practicing that discipline.