Here's a quote from the Buddha playland: "Children might enjoy a dog or turtle shaped boat ride around the island pavilions. But, beware the cutely-named Palace of Unicorns which contains a surprisingly gory house of horrors within."
Be sure to attend Seoul's Love Land... an amusement park dedicated to sex. The pics will freak you out, or I would be tempted to post "the rides".
In Lithuania you can "experience" communism for a measly $220.
In Dicken's World (Eng.) you can experience the dark side of the revolution.
In Japan there's an entire park dedicated to Hello Kitty.
And in the good old USA, NYC, you can play non virtual Mario Bros. (Bring your own ape.)