The permanent installation includes a digital display that counted down the time left until 2001 (no longer in operation) and an analogue clock with Roman numerals on one side and kanji on the other. Just prior to his work on Maishima, in 1996, Hundertwasser was enlisted to add some flair to Kids Plaza Osaka, a hands-on museum with a spiral tower poking through the fourth-floor ceiling and a highly adventurous interior.