(Replying to PARENT post)
There's also the Edo-Tokyo Open Air Architectural Museum outside of Tokyo[1] (in Koganei, not the one in Ryogoku) that has some three dozen buildings that have been moved there. They go back as far as the Edo period. Well worth the time if you're in the area (though admittedly, kinda hard to get to).
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(Replying to PARENT post)
Meiji Mura is an impressive collection of Meiji-era buildings that have been gathered from around Japan, including the lobby of the Tokyo Imperial Hotel (designed by Frank Lloyd Wright) and two full-size churches from Kyoto.
Little World is primarily a collection of traditional houses that have been transported to Japan and reconstructed from around the world.
The amount of effort that went into moving and re-building the dozens of buildings at each site must have been incredible. Both are worth visiting if you are near Nagoya.
(1) https://www.meijimura.com/english/
(2) http://www.littleworld.jp/english/index.html