Joypolis
From Sega Retro
"Opening"
That section is a leftover from Wikipedia, but there are (at least) four parks - which one is it referring to? Unless by chance every single one has 11,946m2 of floor space and the same seven attractions.
Also not entirely sure if the Yokohama branch actually closed - I've read it was stripped back but the photos seem kinda recent? (more recent than 1998 anyway) -Black Squirrel (talk) 16:40, 1 November 2014 (CDT)