Must-See Cave-Like Mansion In Wisconsin Where ‘The Flintstones’ Meets A Rainforest CaféMust-See Cave-Like Mansion In Wisconsin Where ‘The Flintstones’ Meets A Rainforest CaféA six bedroom, six bath cave like mansion in Wisconsin has an indoor pool, koi pond, a private lake on 17 acres and is a must-see.IanIan