The Virtual OS Museum isn't a physical place, it's a collection of over 1,700 distinct installations of over 600 operating systems for over 250 platforms that you can download and run via emulation right on your computer. It's largely the work of one man, Andrew Warkentin, a developer and OS historian who has been slowly building his collection of OS images since 2003.
The library spans nearly the entire history of computing from 1948's Manchester Baby, the first stored computer program, to early builds of Android from 2011. Unsurprisingly, there are a lot of obscure OSes in there, including countless DOS variants, MOS for the Acorn BBC Mas …
