On September 26, 1997, Themeparks LLC announced that Kentucky Kingdom would be sold to Premier Parks for $64 million, the deal was finalized on November 7.

[5] In the late 1990s, Hart was approached by Fitraco, a Belgian company, to reopen Magic Springs amusement park in Arkansas.

Hart then reassembled and restarted Themeparks LLC, only one year after it dissolved after the sale of Kentucky Kingdom to Premier Parks (now Six Flags).

[6][7] During Themeparks LLC's operations at Magic Springs, attendance grew to new highs, after the additions of Crystal Falls Water Park and the Timberwood Amphitheater.

[11] On January 24, 2013, The Fair Board approved the proposal from KK Redevelopment LLC and Ed Hart to reopen Kentucky Kingdom.

In the early 2000s, Hart and Themeparks LLC began developing a new theme and water park, which was to be called Thrillopolis, and to be located in Nashville, Tennessee.

Nashville's only amusement park, Opryland USA, had previously closed permanently several years prior in 1997 and was replaced by a shopping mall in 2000.