Trope A Day-Secret Government Warehouse

Secret Government Warehouse-The Ministry of Ghosts maintains one of these, called the Silent Library.  Where it is and how it works is kept a very, very strict secret [1], but for the very few that know about it, it does the job of keeping things stored very, very well.  To the best of anybody’s knowledge, there hasn’t been an accidental release of anything from the Silent Library since it was built.  Considering some of the things that are stored there (one of which is a zombie plague), that’s saying a lot.

The Griffin Moot’s Special Working Group maintains the Ghost Floats-under the theory that a moving target is better than a stationary one, no matter how secret or well protected.  It’s known that the minotaurs and zebras maintain their own depositories, but what these depositories are and how they work are so secret that they might not even know what they do or how they work.  All they know is that things are kept secure and that’s all they need to know.

What happens when changelings get ahold of dangerous artifacts…usually requires somebody else to deal with the problem.  Often by a saturation bombardment from orbit.

[1]-The Silent Library is basically a Earth-sized huge ball of metal orbiting a pulsar in an orbit that sweeps it through the radiation bands every 10 hours.  Dug very deeply into the planet is the Silent Library, which incorporates all sorts of additional security systems, from AI-driven guns to massive physical separation of dangerous artifacts from anything that might come in contact with it.  Oh, and several very large anti-matter weapons to make sure nothing ever gets out.

Getting to the archive is tricky.  You have to come out of Tunnel Drive from one of only three or four stars that gives you a trajectory that doesn’t slam you into the radiation bands.  Then, you have to get your ship into dock on the planet before the planet itself goes through a radiation band (this limits you to ships of less than 100,000 tons, since anything larger can’t use anti-gravity).  And, you have to get through the automated defenses that will shoot first, shoot again, and interrogate the remains if you don’t identify yourself properly.

Trope A Day-Great Big Library Of Everything

Great Big Library of Everything-Quite a few of these, actually.  Assuming you don’t count the Wired itself as a huge storage repository, you have the Canterlot Main Library, which is the single largest building on Equestria, let alone library.  The main library wing is so large, it has a dedicated pegasus weather team to keep the humidity down to prevent damage to the books.  The card catalogue was printed once, and it came out to something around twenty million pages of 8 1/2×11″ paper.  The specialist library sections are built to scale.  Pretty much everything that has ever been produced or published or otherwise created within the Kingdom has a copy stored at the Canterlot Main Library, or one of the storage branches scattered throughout Equestria or the Kingdom proper.

Runner up for this is the House of Knowledge in the Zebra Imperium.  The Griffin Moot boasts that the Library Of Wonders is larger, but it doesn’t have the same history and gravitas as the Canterlot Main Library.

For secret libraries, the Ministry of Ghosts maintains the Silent Library-a repository of dangerous magic, artifacts, and things that should never be let out…somewhere.  The Special Working Group has the Ghost Floats, a number of ships that store dangerous things on perpetual looping missions through the entire Griffin Moot.  Unit 999 has a storage archive…somewhere, as well as the Silent Ones.